Chemistry Part 2

What is the formula for density?

• D=m/v

• D=v/m

• D=w/m

• D=m/w

A tin box has a volume of 89 cm³ and a mass of 623 grams. What is its density?

• 7 g/cm³

• 0.14 g/cm³

• 0.75 g/cm³

A piece of asphalt has a volume of 251 cm³ and a mass of 502 g. What is its density?

• 2 g/cm³

• 0.5 g/cm³

• 0.285 g/cm³

A beechwood shed has a volume of 1.6m³ and a mass of 1,200 kg. What is its density?

• 1,920 kg/m³

• 750 kg/m³

• 15 kg/m³

Which of the following is a chemical reaction?

• Burning paper

• Chopping wood

• Tearing paper

• Smashing rocks

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which is an example of a physical change?

• Burning paper

• Chopping wood

• Metal rusting

• Fireworks

The reactants are on the ________ side of a chemical equation.

• Right

• Left

The products are on the ____________ side of a chemical equation.

• Right

• Left

What are the reactants in the following equation?

2H₂ + O₂ → 2H₂O

• 2H₂ + O₂

• 2H₂O

• O₂

• 2H₂

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

What are the products in the following chemical equation?

Na + OH → NaOH

• Na

• OH

• Na + OH

• NaOH

Tags

NGSS.MS-PS1-1