The main difference between a mixture and substance

Ability to separate a mixture through physical means

Which of the following would have the same density

small brass cube, large brass cube

When poured into water, Glycerol falls to the bottom of beaker which of the following is true

An object that floats in water will always float in glycerol

From the image below. Why did the temperature change very little between minutes 5 and 8

Heat applied to acid was used to overcome forces

Atoms have no electric charge because they

Equal number of electrons and protons

What happens when you change the number of electrons in an atom

charge of element changes (ions)

Engineer creating a new material of "indestructible" eye glass needs what characteristics

low brittleness, high hardness, high elasticity

A 100N boat floats. What must be true about the weight of the displaced water

Must be equal to or greater than 100N

Elements in the same column on the periodic table have similar chemical re activity because

same number of valence shell electrons

which statement best explains why atoms form chemical bonds with other atoms

atoms are unstable unless they combine with other atoms

If one were to combine Magnesium and Chlorine, what type of bond would form?

Ionic, bond between metal and nonmetal

Noble gases, such as helium and xenon are non-reactive because

they have completely filled outer electron shell

Which of the following is true for valence electrons

valence electrons may be gained or lost when bonding

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Physical Science Chemistry Review

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Questions 91

Answers

1
List the phases of water in order, from the most amount of energy to the least
Gas-Liquid-Solid
Liquid-Solid-Gas
Gas-Solid-Liquid
Solid-Liquid-Gas
2
_____________ carries a positive charge. Electrons carry a ____________ charge.
electron, negative
proton, negative
proton, positive
proton, positive
3
The main difference between a mixture and substance
Ability to separate a mixture through chemical means
Inability to separate
Ability to separate a mixture through physical means
None of the answers
4
A path through which electric charges can travel
Wood
Open Circuit
Switch
Closed Circuit
5
Very Stable, non reactive, 8 valence electrons are which group
Noble Gases
Transition metals
Alkali Metals
Halogens
6
Which of the following would have the same density
none of these
small brass cube, small aluminum cube
Small brass cube, medium aluminum cube
small brass cube, large brass cube
7
When poured into water, Glycerol falls to the bottom of beaker which of the following is true
The glycerol is less dense than the water
An object that floats in glycerol will always float in water
An object that floats in water will always float in glycerol
Water is more dense than glycerol
8
Glass has which of the following characteristic
Hardness
Tensile Strength
Brittleness
Malleability
9
The paper chromatography conducted in lab
Sorts by attraction to water
Sorts by only color
None of these answers
Sorts by charge
10
From the image below. Why did the temperature change very little between minutes 5 and 8
Stearic Acid must have been removed
None of these answers
Stearic acid molecules were not moving fast
Heat applied to acid was used to overcome forces
11
What type of change is smashing a pumpkin on the road
physical
chemical
12
Atoms have no electric charge because they
Equal number of electrons and protons
Equal number neutrons and protons
Neutrons in their nuclei
equal number of charged and non-charged particles
13
When compared to a high viscosity liquid, a liquid with a low viscosity
Takes longer to pour from one container to another
Is easier to pour
Must have a lower velocity of flow
Must have large particles increasing friction between
14
Component used to start and stop the flow of electrons
Switch
Wire
Light Bulb
Resistor
15
When an atom gains or loses electrons, it has an electrical charge. It is known as:
hydrate
An ion
free radical
monoatomic molecule
16
The volume of a solid cube with a length of 10cm, width of 10cm and height of 10cm is
10000 mL
1000 cm3
1000 cm
30 cm3
17
Material where electrons cannot flow
Copper
Conductor
Insulator
Metal
18
Identify the reactants in the diagram below
CO2 & H2O
CH4 & O2
CH4 & CO2
O2 & H2O
19
What happens when you change the number of electrons in an atom
isotope is created
charge of element changes (ions)
none of these
identity of element changes
20
The charge of an electron is
-2
-1
0
+1
21
What type of change is rust on a car
chemical
physical
22
Engineer creating a new material of "indestructible" eye glass needs what characteristics
high brittleness, low hardness, low elasticity
high hardness, high elasticity, high brittleness
low brittleness, high hardness, high elasticity
low elasticity, high brittleness
23
In the diagram below, Letter D is pointing to what
energy level
nucleus
protons
neutrons
24
Number of electrons found in the outermost energy shell is referred to as
oxidation number
noble
valence
charge
25
Sodium forms an ionic bond with chlorine when sodium _____ an e- and chlorine _______ an e-
loses, gains
shares, shares
gains, loses
loses, loses
26
A 100N boat floats. What must be true about the weight of the displaced water
Must be 200N
Must be less than 100N
None of these
Must be equal to or greater than 100N
27
What is true about the viscosity of liquids when temperature increases
Viscosity decreases
Viscosity increases
None of these
Viscosity stays the same
28
Elements in the same column on the periodic table have similar chemical re activity because
Contain similar amounts of energy
they have similar number of isotopes
atoms prefer to have full valence shells or empty ones
same number of valence shell electrons
29
What is the correct name for the ionic compound Li₂O
lithium dioxide
lithium oxide
dilithium monoxide
dilithium oxyide
30
What happens to the mass and amount of molecules of a substance as it changes state
They stay the same
Mass and Number of Molecules Decrease
Mass and Number of Molecules Increase
Mass increases and Molecules Decrease
31
4 AA (1.5V) batteries are placed in a series, what is the total voltage?
5.5V
2.5V
1.5V
6V
32
When atoms try to achieve to be stable that is called
cations
anions
valence electrons
Full octet
33
which statement best explains why atoms form chemical bonds with other atoms
atoms are unstable unless they combine with other atoms
atoms are always attracted to other atoms
when atoms collide they bond automatically
most atoms are less stable when they combine with others
34
If one were to combine Magnesium and Chlorine, what type of bond would form?
Covalent, bond between two metals
None of these
Covalent, bond between two nonmetals
Ionic, bond between metal and nonmetal
35
Fusion occurs when nuclei
mutate
split
combine
gain energy
36
What type of change is Burning a piece of paper
physical
chemical
37
Noble gases, such as helium and xenon are non-reactive because
they are unusually large atoms
they have been around the longest on Earth
they are chemically unstable
they have completely filled outer electron shell
38
Dry ice that is exposed to room temperature is which of the following
Evaporation
Sublimation
None of these
Condensation
39
Gold Foil Experiment, this scientist used information that atoms are made of tiny dense nucleus
John Dalton
Democritus
Neils Bohr
Ernest Rutherford
40
ALL Matter can be classified as two categories
Solids or Liquids
Mixtures or Substances
Elements or Compounds
Atoms or Molecules
41
A measure of how much pulling, or tension, a material can withstand before breaking is
malleability
hardness
brittleness
tensile strength
42
Diamonds rank highly for this characteristic
Brittleness
Malleability
Hardness
Tensile Strength
43
How many valence electrons does Calcium have
5
4
2
3
44
Atomic Mass is equal to
number protons and neutrons
number of neutrons an atom has
number of protons and electrons
number of protons an atoms has
45
The order of elements in the periodic table is based on
electric charge of nucleus
Number protons in nucleus
number of neutrons in nucleus
atomic mass
46
Which of the following is true for valence electrons
valence electrons may be gained or lost when bonding
each element has a different number of valence electrons
Always located in the innermost level
they are only found in radioactive isotopes
47
Water (H₂O) is which of the following
Heterogeneous Mixture
Compound
Homogeneous Mixture
Element
48
The measure of how much tension a material can withstand before breaking
Brittleness
Tensile Strength
Malleability
Hardness
49
The force that holds neutrons and protons together in the nucleus is known as
Strong nuclear force
Electromagnetic
Weak nuclear force
Hydrogen bonding
50
In the diagram below, Letter B is pointing to what
energy level
proton
neutron
nucleus
51
The flow of electrons
Voltage
Lightning
Resistance
Current
52
Chicken Noodle Soup is which of the following
Homogeneous Mixture
Heterogeneous Mixture
Element
Compound
53
Object 1: Weight (0.52N) Disp. Water (0.52N). Will object 1 sink or float?
Float because weight of water is same balancing forces
Sink because weight of water is the same as weight of object
Sink because weight of object is less than weight of water
Float because weight of object is more than weight of water
54
Which of the following is not a type of nuclear radiation?
gamma
beta particles
alpha particles
neutron emission
55
Which of the following situations does water undergo a physical change
neighbor's pond freezes over
Water is broken down to H2 & O2
56
Very reactive metal. Group 1 is which group
Halogens
Noble Gases
Alkali metals
Alkaline Earth metals
57
Rank the following in order from smallest to largest
electrons are smallest, protons and neutrons are same
electron, proton, neutron
neutrons are smallest, electrons are protons are same
protons are smallest, electrons and neutrons are same
58
Covalent bonding occurs
electrons are stolen
electrons are shared
in salts like NaCl
electrons are transferred
59
Measurement of electrical potential energy
Amps
Current
Resistance
Voltage
60
Ice cubes float in a glass of water because
ice is losing mass through melting
liquid water is less dense
molecules are arranged in to leave space, less density
ice is more dense
61
CaCl₂contains which of the following ions
Ca2+ and Cl-
Ca4+ and Cl-2
Ca+ and Cl-
Ca2+ and Cl-4
62
Elements in group 1 would LEAST likely bond with elements from which group
group 16
group 2
none
group 17
63
Carbon and other nonmetals are found in which area of the periodic table
On the left-most side
in the middle
bottom rows
on the right side
64
What is the formula of the ionic compound sodium nitride
Na2N
NaN3
Na3N
NaN
65
Antoine Lavoisier established which principle
total mass of products is more than reactants
total mass of products is equal to reactants
an open system is required to observe mass
Mercury and oxygen are unreactive
66
What is true about velocity and viscosity of a liquid from our experiment
Velocity changes, as viscosity stays the same
Higher the velocity, higher the viscosity
lower the velocity the higher the viscosity
None of these
67
Alkali metals, when ionized, have in common
oxidation number -2
oxidation number +1
oxidation number -1
oxidation number +2
68
Water accumulating on outside of glass is which of the following
None of these
Evaporation
Sublimation
Condensation
69
In the diagram below, Letter C is pointing to what
protons
neutrons
nucleus
energy level
70
Gold is which of the following
Homogeneous Mixture
Heterogeneous Mixture
Compound
Element
71
When a chemical change occurs
Atoms are rearranged
Law of conservation of mass is followed
all of these answers
Chemical properties of new substances are different
72
What type of bond is MgCl₂
Covalent
Ionic
73
Do any of the atom diagrams below represent atoms of the same element?
Yes all of the atoms are the same
Yes atom A and C are the same
No they are all different
Yes A and B are the same
74
Ability to be shaped (pounded into thin sheets)
Hardness
Brittleness
Malleability
Tensile Strength
75
The smallest part of a compound
Atom
Molecule
Nucleus
Speck
76
In the diagram below, Letter A is what
protons
energy level
electrons
neutrons
77
Student has salt, sand and water in a beaker. How will the three portions be separated
Filtrations for salt, evaporation for the sand
Filtration for sand, distillation for salt
Filtration for sand, evaporation for salt
Evaporation will separate all three
78
What type of change is steam generated when boiling water
physical
chemical
79
Which of the following is true of a heterogeneous mixture
Density is the same throughout
It is not possible to separate the various parts
Different samples may not be exactly alike
One sample will determine what it is made of
80
Puddles drying in a parking lot is which of the following
Evaporation
None of these
Sublimation
Condensation
81
Ink is which of the following
Homogeneous Mixture
Heterogeneous Mixture
Element
Compound
82
Large group of metals in the middle
Alkaline Earth metals
Alkali metals
Halogens
Transition metals
83
Very reactive non metals, salt forming. Group 17
Alkali Metals
Noble Gases
Halogens
Transition metals
84
Shorthand version of the components in an electrical circuit
Wiring Instructions
Venn Diagram
Closed Circuit
Circuit Diagram
85
Condensation occurs when
Gas to a Solid
Gas to a Liquid
Liquid to a Gas
Solid to a Liquid
86
In the diagram below, Letter E is pointing to what
electron
energy level
neutron
proton
87
What type of bond is CO₂
Covalent
Ionic
88
Measurement for how difficult it is for electrons to flow
Amplitude
Current
Voltage
Resistance
89
Atoms with a different number of neutrons are called
ions
atomic number
stable
isotopes
90
He was the person that said all matter is made up of atoms also known as Atomic Theory
Rutherford
Einstein
Dalton
Bohr
91
Which of the three subatomic particles is so small it has nearly no mass
electrons
neutrons
beta particles
protons

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