Physical Science Unit 5 Test Review

How many protons does this element have?

• 9
• 10
• 18
• 19

What is the atomic mass of this atom?

• 10
• 20
• 20.180
• Neon

What is the chemical symbol for this element?

• mg
• Mg
• MG
• Magnesium

How many neutrons does this element have?

• 5
• 5.811
• 6
• 11

True or False?  You can break down an ELEMENT like oxygen chemically.

• True
• False

True or False?  You can break down a COMPOUND like water (H₂O) chemically.

• True
• False

True or False?  You can break down a COMPOUND like water (H₂O) physically.

• True
• False

What does this picture represent?

• element
• compound
• mixture

What is this compound made of?

• 1 carbon, 2 oxygens
• 1 carbon, 1 oxygen
• 2 carbons, 2 oxygens
• 2 carbons, 1 oxygen

What is the following compound made out of?
2H₂O

• 2 hydrogens, 2 oxygens
• 4 hydrogens, 1 oxygen
• 2 hydrogens, 1 oxygen
• 4 hydrogens, 2 oxygens