Unit 6 Mastery Test

How many moles of H are in one mole of this compound?

• 1 mole
• 3 moles
• 4 moles
• 6 moles

Tags

NGSS.HS-PS1-7

What is the molar mass of the compound below?

• 18.00 g/mol
• 36.99 g/mol
• 40.00 g/mol
• 82.98 g/mol

Tags

NGSS.HS-PS1-7

What is the molar mass of the compound below?

• 53.00 g/mol
• 72.86 g/mol
• 106.88 g/mol
• 218.55 g/mol

Tags

NGSS.HS-PS1-7

How many moles of S are in one mole of this compound?

• 1 mole
• 2 moles
• 4 moles
• 7 moles

Tags

NGSS.HS-PS1-7

If I have one mole of sodium (Na), how many atoms of sodium do I have?

• 12, or one dozen, atoms
• 6.02 x 10^23 atoms
• 6.636 x 10^-34 atoms
• 3.00 x 10^8 atoms

True or false: burning paper is a chemical change

• True
• False

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

True or false: melting ice is a chemical change

• True
• False

What is a key indicator of a chemical change?

• change in state of matter
• change in volume
• formation of a precipitate
• change in shape

Tags

NGSS.MS-PS1-2

What distinguishes a physical change from a chemical change?

• A physical change alters the chemical composition of a substance
• A physical change involves a change in temperature
• A chemical change can be easily reversed, while a physical change cannot
• A physical change affects the form of a substance, but not its chemical composition

Which of the following are physical properties? (Check all that apply)

• reactivity with acid
• solubility in water
• ability to rust
• luster