Ryan's epic science test review

What does the 4 represent?

• period number

• element name

• atomic number

• chemical symbol

What does the 1.00794 stand for?

• Hydrogen
• atomic number
• atomic mass
• atomic explosion

• Metals
• Nonmetals
• Metalloids

• Metals
• Nonmetals
• Metalloids

• Metals
• Nonmetals
• Metalloids

Is burning wood a chemical or physical change?

• chemical
• physical

Is glass breaking a chemical or physical change?

• chemical
• physical

Salt dissolves in water

• physical Change
• chemical change

Kim puts an ice cube in a beaker and it melts. This is a good example of:

• a physical change.
• a chemical change.
• an experiment.
• an analysis.

A chemical change is different than a physical change because in a chemical change

• Chemicals are used
• Molecules do not physically touch
• A new substance is formed and in a physical change no new substance is formed
• The change can be seen but in a physical change it cannot