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7th Grade Topic 1 Review Flashcards | StudBud
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7th Grade Topic 1 Review
7th Grade Topic 1 Review
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1
Density is a PHYSICAL property
True
False
2
Any change that alters the form or appearance
Chemical change
Chemistry
Physical Change
Product
3
Change in which one or more substances combine or break apart to form new substances is...
Mixture
Pure Substance
Physical Change
Chemical Change
4
A state change is always a CHEMICAL change.
False
True
5
The _____ of an object is a measure of the mass of a material in a given volume.
mass
density
weight
volume
6
Why is your weight on the moon less than that on Earth?
There is less gravity on the moon
There is not any junk food on the moon
There is not any gravity in space
There is more gravity on the moon
7
What is the energy stored in the bonds between atoms?
electrical energy
thermal energy
chemical energy
gravitational energy
8
In a CHEMICAL change a new substance is formed.
True
False
9
The amount of matter in an object...
atoms
mass
volume
weight
10
A characteristic of a substance that describes its ability to change into different substances
physical property
chemical property
state
mass
11
The boiling point of a substance is a(n) CHEMICAL property
False
True
12
The ability of iron to rust is a(n) ___________ property
chemical
physical
matter
state
13
A balloon filled with air does not rise as high as a balloon filled with helium. What does that tell you?
Helium is denser than air.
The two gasses have the same density
Helium is less dense than air.
When heated, helium becomes more dense.
14
THERMAL energy naturally flows from warmer matter to cooler matter.
False
True
15
A mixture of iron and sulfur can be separated by
filtration
magnetric attraction
evaporation
distillation
16
How does a chemical change differ from a physical change
In a chemical change only the shape is changed
In a physical change two substance are combined
Chemical makes a new substance. Physical does not
A physical change creates a new substance. Chemical change does not.
17
A characteristic that can be observed or measured without changing the substance
Chemical reaction
Physical properties
Substance
Chemistry
18
Butter is melted in a pan. Which of the following is true about the change?
It is a chemical change that absorbs energy.
It is a physical change that releases energy.
It is a chemical change for which there is no change in energy.
It is a physical change that absorbs energy.
19
A measure of the mass of a material in a given volume.
density
weight
volume
mass
20
Table salt is an example of a(n) SUBSTANCE.
True
False
21
The study of matter and how matter changes
Mixture
Elements
Matter
Chemistry
22
The form or appearance of matter is altered during a(n) _____ change.
chemical
endothermic
exothermic
physical
23
______ is related to the energy of motion of the particles of matter
sound energy
mechanical energy
thermal energy
light energy
24
An object that floats in water has a density LESS than 1g/mL
True
False
25
Anything that has mass and takes up space
density
matter
volume
mass
26
Another term for the ability to burn is ________________.
Explosion
Melting
Boiling
Flammability
27
The physical property that makes metal pots good for cooking is:
flammability
flexibility
electrical conductivity
heat conductivity
28
_________ energy naturally flows from warmer matter to cooler matter.
thermal
temperature
electrical
chemical
29
In an endothermic reaction, energy is RELEASED
True
False
30
The amount of matter in an object is a measure of its:
Mass
Velocity
Weight
Density
