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Chemistry Review Flashcards | StudBud
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Chemistry Review
Chemistry Review
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8th grade chemistry #chemistry #elements #families #science #8thgrade #eighthgrade
Flashcards
36 cards
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Questions
36
Answers
1
True/False - The Noble Gases are very reactive.
True
False
2
A compound is two or more elements chemically bound
that lose their properties and create a new substance
that keep their properties
that is made up of a single type of atom
that break easily
3
Reactive means ________
Man-made
transfers electricity and heat
Reflects light
Responds to other elements
4
True or False: There are more metals than non-metals on the periodic table.
True
False
5
A collection of elements on the periodic table with similar properties are....
Group
Periods
Tables
Compounds
6
Physical/Chemical Change: Water boiling
Physical Change
Chemical Change
7
True/False - Electrons are in the nucleus.
True
False
8
What type of reaction is A + B = AB
replacement
decomposition
double replacement
synthesis
9
Sodium catches fire when it hits water. What is happening?
Conducting
A reaction
Lustering
Magic
10
A malleable metal means?
it is very reactive
It can be shaped with pressure
it has a high melting point
it conducts electricity
11
There can be up to ____ electrons in the 2nd energy shell.
18
4
2
8
12
What is the basic building block of an element?
Matter
Atom
Electron
Proton
13
A proton has a _______ charge
Electric
Positive
Neutral (No Charge)
Negative
14
The _____ number is the amount of protons or electrons in an atom.
Phone
Jersey
Mass
Atomic
15
Chemical/Physical Change: Burning wood
Chemical Change
Physical Change
16
NaCl is an example of a
Compound
Liquid
Element
Mixture
17
Lemon juice has a pH of about 2.5
It is a base
It is an acid
It is neutral
18
Element is
made of different types of atoms
is not on the periodic table
made up of the same type of atoms
made up of compounds and mixtures
19
Alkali Metals are known to be the least reactive metals on the periodic table.
True
False
20
How can I separate salt and water?
distillation
filter
stir it
magnet
21
Which is the coefficient of: 8H
2
0
2
H
O
8
22
Brittle means?
Man-made
Smooth
Easily cracked or fractured
soft and bendable
23
Which would NOT help something dissolve faster?
stirring
adding heat
freezing it
24
An atom is made up of proton, electron, and ________
Matter
Neutron
Oxygen
DNA
25
All living and nonliving things are made of
water
air
elements
soil
26
Lead is an example of a
Pencil
Mixture
Compound
Element
27
What is it called when water vapor cools back into liquid droplets?
sublimation
condensation
evaporation
solidification
28
The periodic table has vertical columns called ________
Tables
Groups/ families
Rows
Periods
29
What takes the shape of its container?
solid
liquid and gas
gas
liquid
30
The atomic mass (mass number) of an element is equal to ______
# of electrons+protons
# of neutrons+protons
# of electrons
# protons
31
The Law of Conservation of Matter tells us
matter can be created in reactions
matter can be destroyed
we must save all matter
mass of reactants must equal the mass of products
32
Which is NOT a property of most metals?
gas
conductors
shiny
solid
33
Which is a physical property?
color change
smoke
flammability
volume
34
What periodic group is Chlorine (Cl) located in?
Noble Gases
Halogens
Transition Metals
Alkali Metals
35
Binghamton rain water has a pH of about 4.7
It is basic rain
It is normal rain
It is acid rain
36
What is this a picture of?
Cells
Mixture
Element
Compound
