If a solid block of wood has a volume of 10 cm³ and a mass of 40 grams, what is its density?

• 40 grams
• 4 cm³
• 4 g/cm³
• 40 g/cm³

If a block of cheese was chopped up into 50 identical cubes of cheese, how could you compare one of the cubes to the whole block?

• the small cube has the same mass as the whole block
• the small cube has the same volume as the whole block
• the small cube has the same weight as the whole block
• the small cube has the same density as the whole block

True or False: If you have the same volume of two different substances, they may have different densities.

• True

• False

Tags

NGSS.MS-PS1-2

What is true about the mass of the reactants compared to the mass of the products of a chemical reaction?

• they will always be the same
• they are sometimes the same
• they will always be different
• they will sometimes be different

Tags

NGSS.MS-PS1-5

Which one is not a chemical change?

• a wick burning
• a nail rusting

• metal corroding
• wax melting

Tags

NGSS.MS-PS1-2

True or False.  When a chemical change takes place, a new substance is formed every time.

• True
• False

Tags

NGSS.MS-PS1-2

Which one is not a physical change?

• paper ripping
• chopping wood
• gold melting into a liquid
• a match burning

Tags

NGSS.MS-PS1-2

If you completely dissolve a powder into water, this is an example of a ___________change.

• chemical
• physical

Mass is

• The ability of an object to float

• The amount of space an object takes up

• Descriptions of matter

• The amount of matter in an object

Which is a true statement about this picture?

• Water is less dense than sugar syrup

• Sugar syrup is more dense than honey

• Edible oil is the most dense

• Dishwashing liquid is less dense than edible oil

Tags

NGSS.MS-PS1-2