Unit 1 Multiple Choice Practice

Subatomic particles with a negative charge

• Electrons

• Neutrons

• Protons

• Quarks

Subatomic particles with a positive charge

• neutrons
• atomic mass
• protons
• isotopes

Value representing the number of protons in an element

• Atomic Mass
• Mass Number
• Valence Electrons
• Atomic Number

What number indicates the nucleus?

• 1
• 2
• 3
• 4

What number indicates an electron?

• 1
• 2
• 3
• 4

How many atoms total are there in this compound Na₃(OH)?

• 3

• 2

• 4

• 5

• element
• compound
• mixture of elements
• mixture of compounds

Which of the following is not a chemical property? 

• rusting 
• boiling 
• rotting 
• burning 

Which one of these is a chemical property?

• melting point
• boiling point
• color
• flammability

Properties that can be observed without trying to change the identity of the substance.

• Physical
• Chemical