Science Module 3 Chemistry Flashcards
1
Q
What is a physical change?
A
physical change is a change in properties such as texture, shape, or state
2
Q
What is a chemical change?
A
chemical change represents the formation of a new substance after atoms are rearranged in a chemical reaction
3
Q
What is a compound?
A
A compound is a substance made of two or more elements
4
Q
What is a mixture?
A
A mixture is made of two or more pure substances
5
Q
What is an example of physical change
A
boiling water
6
Q
What is an example of chemical change?
A
burning wood
7
Q
T/F melting ice is a physical change
A
True
8
Q
What is a reactant?
A
The substances that occur before a chemical reaction
9
Q
What is an example of a word equation?
A
iron + oxygen –> iron oxide (rust)
10
Q
What is all matter made up of?
A
Atoms
11
Q
Name an element.
A
Sodium
12
Q
Name a mixture.
A
Sand and water
