stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Unit 2: Chemistry Review Flashcards | StudBud
Explore
/
Unit 2: Chemistry Review
Unit 2: Chemistry Review
126 terms
·
StudBud Administration
·
15 plays
Grade 9 science (Alberta, Canada Curriculum) TOPIC 2: Matter and Chemical Change
Flashcards
126 cards
F
Practice quiz
P
Host live
L
Questions
126
Answers
1
What are some properties of Ionic Compounds?
High melting point
High boiling point
Good Electrical Conductivity
No crystal shape
2
There were many attempts to classify all the elements, the Greeks used ...
Moons ONLY
Shapes
Gods
Celestial Bodies
3
What type of mixture is this? (salt dissolved in water)
Mechanical mixture (able to see the substance that makes it)
Homogenous (not able to see the substance that makes it)
Heterogeneous (able to see the substance that makes it)
Solution (not able to see the substance that makes it)
4
An example of corrosion (when oxygen reacts with metal) is?
Dissolving
Rusting
Cellular Respiration
Iron Oxides
5
what is the weight of the product ?
32g
74g
88g
56g
6
What is this ?
Danger: Oxidizing metal!
Caution: Explosive!
Warning: Flammable!
Danger: Flammable!
7
Reactants are the
Materials that are formed at the end
Materials that are formed from the reaction
Materials that are made at the beginning
Materials that are used to start the reaction
8
The ability to control fire in the year 8000BC led to the discovery of more common tools like
Rocks
Glass
Ceramic Material
Mud
9
What could be a property of an element?
Eggplant
Color
Google
State
10
Which one of these is a Nobel Gas; and which is a property of it?
Neon; non-reactive
Argon; reactive
Neon; very reactive
Helium; super reactive
11
Halogens are found in Group
2
18
1
17
12
Closed systems allow _____ additional material to enter or leave
SOME
MOST
ALL
NO
13
Nobel Gases are found in Group
2
1
17
18
14
What is an ion?
atoms with an overall neutral charge
an atom that has the ability to change its charges
atoms that become charged through the gain/loss of electrons
an atom that creates a new substance every time
15
An compound is _____________.
a material that can be broken down further
a material that can not be broken down further
When 2 or more elements mix to form a homogenous mixture
When 2 or more elements combine chemically
16
When a chemical reaction releases heat energy, it is called
A Exothermic Reaction
A Endothermic Reaction
17
What type of mixture is this?
Colloid (particles that are suspended are hard to separate)
Suspension (when particles are held within each other)
18
Today alchemy would be know as a __________ since it included magic, not science
Magic-science
Fake science
Chemistry
Pseudo-science
19
Open systems allow _____ additional material to enter or leave
NO
LIGHT
HEAVY
ANY
20
Matter is
anything that had mass and occupies space
anything that is important to you (it matters)
an affair or situation under consideration; a topic
Science
21
Quantum Mechanics have found that electrons actually exist in a _________________.
Charged Sphere
Charged Cloud
Charged Prism
Charged Cube
22
When a substance is dissolved in water, it is called ____________.
an aqueous mixture
an aqua mixture
an aqueous solution
a water solution
23
What type of mixture is this?
Heterogeneous (able to see the substance that makes it)
Solution (not able to see the substance that makes it)
Homogenous (not able to see the substance that makes it)
Mechanical mixture (able to see the substance that makes it)
24
Thomson proposed this model of negative charged electrons within a positive sphere:
Planetary Reference
Raisin Bun Model
Model of Electrodes
Electron Model
25
Chadwick discovered _________________.
Neutrons ONLY
Electrons
Protons and Neutrons
Protons ONLY
26
The name for N
2
O
3
is ...
Dinitrogen Trioxide
Neon Trioxide
Trinitrogen Tetraoxide
Dinitrogen Monoxide
27
How many atoms of Chlorine and Sodium are in the formula? NaCl
2 each
1 each
3 altogether
0
28
Elements can be named based on their ...
Latin Names (Au = Aurum = Gold)
Letters (O = (first letter) = Oxygen)
Places (Californium)
People (Einsteinium)
29
The idea that everything is made up of small particles started with the _________________.
Early Alchemists
Indian Mathematicians
Greek Philosophers
Italian Chemists
30
When a mixture is formed it combines chemically
FALSE! It does not!
TRUE! Sure does!
31
__________ is an element; __________ is a compound
Hydrogen; Helium
Neon; Carbon Dioxide
Oxygen; Carbon
Water; Sugar
32
Periods or orbitals in the periodic table of elements are numbered from "___" - "___"
1-3
1-18
1-13
1-7
33
What does this mean ?
Warning
Dangerous
Caution
orange diamond
34
An element is _____________.
When 2 or more elements mix to form a homogenous mixture
When 2 or more elements combine chemically
a material that can be broken down further
a material that can not be broken down further
35
In molecular compounds there are _____ ions
Many
No
Only negative
Only positive
36
What are some properties of Molecular Compounds?
Low boiling point
High melting point
Distinctive crystal shape
Insulators
37
John Dalton was the first to define matter as a pure substance, an element. And what else?
All atoms are made up of cells
He attempted to get rid of all atoms
He stated that alchemy was much more productive
He stated that each atom's weight differ from other atoms
38
Democritus' idea that each material had its own properties was rejected because
there was no such thing as atomos
Aristotle was much smarter than him
Aristotle believed in water, fire, earth and air
Aristotle was more popular
39
A substance that can be pounded or rolled into large sheets is said to be
Malleable
Conductible
Awesome
Ductile
40
Combustion is "burning." The products of Combustion are
Water and Carbon Monoxide
Water and Carbon Dioxide
Heat and Carbon Monoxide
Water and Nitrogen Dioxide
41
Molecular Compounds can be found in
all 3
states
FALSE! Ionic Compounds can only be solids; so they are, too
TRUE! They have weak bounds and so can be found in all 3!
42
Alkaline Earth Metals are found in Group
1
18
17
2
43
Bohr provided the theory of how electrons orbit the nucleus in
electron clouds
neutral fields
electron shells
protonic shells
44
What is number 2?
Toxic
Oxidizer
Corrosive
Reactive
45
Products are the
Materials that are formed at the end
Materials that are used to start the reaction
Materials that are formed from the reaction
Materials that are made at the beginning
46
When an object goes through a physical change, its appearance may be altered but ...
Its taste stays the same
Its composition remains the same
Its state remains the same
Its appearance remains the same
47
6000 BC and 1000BC people began to experiment with metals that had high values like
Gold (its lustre, attractive color, and it didn't tarnish)
Iron (for weapons and armour)
Copper (it could be used to make pots, coins, and tools)
Oxygen (you need it to breathe)
48
Even though alchemists weren't real scientist, they performed the first chemistry experiments
TRUE! I love alchemists!
False! They don't deserve the praise!
49
Rays were made of negatively charged particles that were smaller in mass than a hydrogen atom
Those charged particles were atoms
Those charged particles were neutrons
Those charged particles were protons
Those charged particles were electrons
50
The total mass of the reactants will equal the mass of the product. What is this law called?
The Equal Mass Law
Weight Conservation Law
The Conservation of Mass
The Mass Equation
51
The atomic mass (mass of one atom of an element) was found by
comparing them to titanium
comparing them to carbon
comparing them to hellion
comparing them to explodium
52
Democritus believed that each material was made up of different
atomos
. What does
atomos
mean?
Broken
Indivisible
Breakable
Invincible
53
John Newland found that properties of elements seemed to repeat at regular intervals. He called
it The Law of Octaves
it The 8th Rule
it The Piano Key Law
it The law of 8
54
How many atoms of Hydrogen are in the formula? H
2
O
2
1
0
3
55
The difference between WHMIS and Safety symbols is that
Safety symbols is used for household items
Neither are easy to read
both can be chucked in the trash can
WHMIS is for people using these materials at work
56
A chemical formula tells us
How many atoms are in each compound ONLY
How the formula is calculated
How chemical the formula is
How many and which elements are in each compound
57
The Bolded "g" tells us that CH
4
(
g
)
is a ...
Galaxy
Solid
Gas
Liquid
58
When a chemical reaction absorbs heat energy, it is called
A Exothermic Reaction
A Endothermic Reaction
59
When a liquid changes to a gas, it is called ...
Condensation
Melting
Evaporation
Vaporization
60
The formula that comes after the arrow is the
Product
Reactants
61
When a gas changes to a liquid, it is called ...
Condensation
Melting
Vaporization
Evaporation
62
What are Electron Shells ?
Shells that electron love to wear
Subatomic shells found at the beach
Circular orbits that electrons follow around atomic nuclei
Ovule shaped orbits that protons follow around the nucleus
63
Rutherford conducted an experiment with positive particles. He predicted that they would
Reflect in different angles
There is a nucleus
Bounce off the centre
Pass through harmlessly
64
A chemical reaction takes place when
2 or more substance combine to make the same substances
2 or more substance combine to make a new substance
1000's of substances combine to make new substances
no substance combines to make a new substance
65
What is "
c
"?
electron
proton
atom
neutron
66
What is the
red circled
part called (number 8) ?
Atomic Mass Number
Atomic Mass
Atomic Number
The number of protons
67
If acid is dropped on a stone and it starts bubbling, what type of change is it?
Physical
Chemical
68
The results were that particles were reflected in different ways. Rutherford concluded that
The positive particles pass through harmlessly
They will always reflect in different angles
There is a positive nucleus
The power is much too strong for the positive particles
69
Ionic Compounds are
the elements that combine are: a metalloid and a non-metal
the elements that combine are: a metal and a non-metal
the elements that combine are: a metal and a metalloid
the elements that combine are: a metal and a metal
70
Which is an example of a physical property?
Ductility
Boiling Point
Color
Melting Point
71
What safety symbol is this?
Caution: Explosive!
Dangerous: Explosive!
Warning: Explosive!
Caution: Biohazards!
72
What is "
a
"?
proton
electron
neutron
atom
73
What does WHMIS stand for?
Weird Hairy Materials In Systems
Working Hazardous Maintenance Information Series
Workplace Hazardous Materials Information System
Wasteful Hazards that Make Information Systems
74
Dalton's symbols were modified by Berzelius, who used Capital Letters. If there was a repeat
Than you put any random letter (capital)
Than you put the next letter (upper case)
Than you put a second letter (lower case)
Than you put any random letter (upper case)
75
In the 1500's Robert Boyle started to experiment with ____(under pressure and its composition).
Liquids
Gases
Plasma
Solids
76
How do you find how many
neutrons
are in an element?
Amount of Protons - Atomic Mass
Just find the amount of Protons
Atomic Mass - Amount of Protons
Atomic Mass - Amount of Electrons
77
When a solid changes to a gas directly, it is called ...
Condensation
Melting
Sublimation
Deposition
78
Ionic compounds are formed as result of attraction between 2 opposite charged particles called
Molecules
Electrons
Irons
Ions
79
Hantaro Nagaoka proposed this model of negative charged electrons orbiting a positive sphere:
Planetary Reference
Raisin Bun Model
Model of Electrodes
Electron Model
80
What is number 7?
Toxic
Corrosive
Oxidizer
Reactive
81
2000 years after Democritus's time, alchemists carried out experiments that
Aimed to change metals into gold
Had no interest in understanding the nature of matter
Find out about atoms
Taught them about electrons and protons
82
What is "
b
"?
proton
atom
electron
neutron
83
How would you name Oxygen and Magnesium?
O1Mg (Oxygen Magneside)
MgO2 (Magnesium Dioxide)
MgO (Magnesium Oxide)
O2Mg (Dioxide Magne)
84
Groups or Families in the periodic table of elements are numbered from "___" - "___"
1-3
1-7
1-18
1-13
85
What does this mean ?
Warning
Yellow Triangle
Caution
Dangerous
86
Compounds are molecules made of more than one atom bonded together and can be
Made up of the same elements ONLY
Made up of different elements ONLY
Made up of the same elements
Made up of different elements
87
These help speed up a reaction, they are called____. The biological ones are called ____.
Quick Starters; Cells
Enzymes; Cells
Enzymes; Catalysts
Catalysts; Enzymes
88
When a gas changes to a solid directly, it is called ...
Condensation
Melting
Deposition
Sublimation
89
Snow turns into rain just before it reaches the ground; what type of change is this?
Physical
Chemical
90
When a liquid changes to a solid, it is called ...
Melting
Condensation
Freezing
Sublimation
91
Sometimes ions can be formed when certain atoms of elements combine. They are called ...
Elemental Ions
Elemental Gains
Polyatomic Ions
Polyelectrons
92
A chemical change always results in the formation of a different substance/s
FALSE!
TRUE!
93
First Element + Second Element + "IDE" ending
is the formula for
Molecular Compounds
Ionic Compounds
94
What 2 elements are liquids at room temperature?
Mercury; Oxygen
Bromine; Helium
Mercury; Bromine
Carbon; Neon
95
Mendeleev wrote down the 63 known elements on cards and tried to organize them. His goal was to
Make the elements more cool
Find a pattern
Invent Helium
Predict future elements
96
How do you find how many
electrons
are in an element?
protons are equal to electrons (atoms are neutral)
Atomic Mass - Amount of Protons
Just find the amount of Protons
Amount of Protons - Atomic Mass
97
Made up of only one kind of matter that sets it apart from others
Special Substances
Pure Sets
Composites
Pure Substances
98
Find the amount of neutrons in the element (round the number to the closest whole number) :
10
20
15
11
99
Electrons can jump between shells by gaining or losing energy
FALSE! This was only a theory... where is the proof?
TRUE! Ions exist this way!
100
Properties are characteristics that can be used to describe a substance.
FALSE! It is your house!
TRUE! Bang on!
101
When 2 non-metals combine a pure substance called _____________ is formed.
Non- Metal Compound
Ionic Compound
Gassy Compound
Molecular Compound
102
The arrows are pointing to the
Ionic Factor
Ion Molecule Distribution
Ionic Charge
Electron Factor
103
Any solid that can be stretched into a long wire is said to be this:
Ductile
Fun
Conductive
Dense
104
(
Prefix
) + First Element + Prefix + Second Element + "IDE" ending
is the formula for
Ionic Compounds
Molecular Compounds
105
Mendeleev was able to predict atomic masses and properties of elements that weren't discovered!
FALSE! No one can do that!
TRUE! What a god!
106
When a solid changes to a liquid, it is called ...
Condensation
Melting
Sublimation
Evaporation
107
Cellular Respiration is a chemical reaction that takes place in
our bodies
our cells only
our legs only
plant cells only
108
An example of a chemical property is
Reaction with water
The ability to burn
Reaction to heat
Reaction with acids
109
Families of elements
usually have similar properties
vary
have different properties
are nothing like the other elements
110
When naming an Ionic Compound, you first write the
metal or positive charge
; Secondly ...
The name of the metal with the suffix "ide"
The name of the negative charged atom with the suffix "ide"
The name of the metalloid with the suffix "tri"
The name of the non-metal with the suffix "ide"
111
Alkali Metals are found in Group
17
18
2
1
112
What type of elements are coloured in gold? What is a property of it?
Metals; Ductile
Non-Metals; Conductors
Non-Metals; Insulators
Metalloids; Malleable
113
J.J Thompson discovered the subatomic particle by experimenting with
Cathode Rays
CAT Scans
Electron X-Rays
MRI Scans
114
By experimenting, Boyle was led to believe in the theory that ______ created years ago.
Alchemists
Aristotle
Froyda
Democritus
115
What type of elements are coloured in grey? What is a property of it?
Non-Metals; Insulators
Metalloids; Malleable
Metals; Ductile
Non-Metals; Conductors
116
What type of elements are coloured in green? What is a property of it?
Metals; Ductile
Non-Metals; Insulators
Metalloids; Properties of both Non-Metals and Metals
Non-Metals; Conductors
117
Rutherford also stated that the nucleus was only 1/ 10 000th the size of an atom
FALSE! His calculations are so wrong!
TRUE! What a smart man!
118
What is the
red circled
part called (number 15.9994) ?
Atomic Number
Atomic Gravitational Number
Atomic Mass
The number of protons
119
What does this mean ?
Stop Sign
Caution
Warning
Dangerous
120
How would you name Nitrogen and Lithium?
Li1N (Lithium Dinitrogen)
NLi3 (Nitrogen Trilithide)
N3Li (Nitride Lithium)
Li3N (Lithium Nitride)
121
What is number 4?
Corrosive
Biohazards
Reactive
Compressed Gas
122
What type of mixture is this?
Colloid (particles that are suspended are hard to separate)
Suspension (when particles are held within each other)
123
How can you tell that a chemical reaction took place?
Formation of a solid or gas participle
Change in colour
Release or absorption of heat energy
Change in odour
124
What are some factors that effect a reaction ?
Temperature of the reactants
Concentration of the reactants
Presence of Catalysts
Surface area of the reactants
125
Lavoisier studied chemical reactions and invented the naming system. Thus, he is known as the
Father of modern chemistry
Father of traditional chemistry
Father of modern genetics
Father of modern alchemy
126
A mixture is _______.
A combination of pure substances
Suspension of particles
Dissolved oxygen in hydrogen
A mixture of elements
