I Know What You Mean
Things Change
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Physical & Chemical
100
The smallest unit of an element that has the properties of that element.
What is an atom?
100

Au

What is gold?

100
The state of matter in which a substance has a definite shape.
What is a solid?
100
The three states of matter.
What are solids, liquids, and gases?
200
A group of two or more atoms that are joined chemically.
What is a molecule?
200
The process of melting or freezing, or becoming a gas.
What is changes in states of matter?
200

When the number of Protons in an atom changes, the ______________ changes.

What is the Element?

200

This mixture can be physically separated and has two different substances within it

What is homogenous mixture?

300
A substance made of only one kind of atom, such as aluminum.
What is an element?
300
A change that does not result in a new substance.
What is a physical change?
300

Ca

Calcium?

300
The atoms in the reactants rearrange to form products with different properties.
What is a chemical reaction?
400
A substance made of two or more different elements.
What is a compound.
400
This is the cause of matter changing from one state to another.
What is change in temperature?
400

Rain turning into snow due to temperature change

What is freezing?

400
In this state, atoms & molecules move freely and rapidly in all directions.
What is gas?
500
The change from solid to a liquid when heat is applied.
What is melting?
500

These make up an atom

What is Protons, neutrons, electrons?

500
Burning paper is an example of this type of change.
What is a chemical change?
500

These orbit the nucleus of an atom.

What are electrons?

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