CA Units 1 and 2 Review!

Classify the following reaction as a physical or chemical change.
Burning wood for a campfire. ______________

Classify the following reaction as a physical or chemical change.
Boiling water for pasta. ______________

Classify the following reaction as a physical or chemical change.
Melting a block of alumnium. ______________

Match the following subatomic particles to their description!

• A subatomic particle with a negative charge.

• Proton

• A subatomic particle with no charge.

• Electron

• A subatomic particle with a positive charge.

• Neutron

Match the following subatomic particles to their function.

• Identifies the element

• Neutron

• Stabilizes the element

• Electron

• Determines how an element will react

• Proton

What is the mass of an electron?

• 0 amu

• -1 amu

• 1 amu

• 0.5 amu

Which particles contribute to the mass number?

How many neutrons, protons, and electrons are in the following complete atomic symbol?

• 28 protons, 31 neutrons, and 26 electrons

• 28 protons, 31 neutrons, and 28 electrons

• 31 protons, 28 neutrons, and 29 electrons

• 28 protons, 31 neutrons, and 30 electrons

Which box has the mass number?

Which box has the atomic number?