Vocabulary
Matter
Elements
Physical Changes
Chemical Changes
100
What is the smallest possible particle of an element?
An atom.
100
True or False: Light is matter.
False
100
Oxygen is an element. True or False?
True
100
What is a change that does not result in a new substance called?
A physical change
100
A property that involves how a substance interacts with other substances is called what?
A chemical property
200
What is a substance made of just one kind of atom called?
An element
200
What is the smallest particle of matter?
An atom.
200
Water is made up of what two elements?
Hydrogen and oxygen
200
If a solid is heated enough, it will eventually turn into a liquid. This is called what?
melting
200
What is a change that results in the formation of a new substance called?
A chemical change
300
What is substance made of two or more kinds of atoms that are chemically combined?
A compound
300
True or False: Energy is matter.
False
300
Scientists have classified elements into several groups.What are two of these groups called?
Metals and nonmetals
300
If a liquid is cooled enough, it will turn into a solid. This is called what?
Freezing
300
What is the chemical reaction of iron in the presence of water and oxygen?
Rust
400
What is a physical change that occurs when matter changes from one state to another called?
Change of state
400
True or False: Air is matter.
True
400
Elements can be found in different states (solid, liquid or gas.) True or false?
True
400
A trait of a substance by itself is called what?
Physical property
400
Boiling point, melting point, odor, and color are chemical properties of water. True or False?
False
500
Anything that is made up of atoms is called what?
Matter
500
Who was the Greek thinker who explored matter and came up with the word "atom?"
Democritus
500
The two elements, iron and carbon, combine to form what metal?
Steel
500
If a liquid is heated enough, it will turn into a gas. This is called what?
Boiling
500
When you dissolve a big spoonful of salt in water, does the salt go through a physical or chemical change?
Physical
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