What is the density of a wooden ball that has a volume of 20 ml and a mass of 15 grams?

• 35 g/ml

• 5 g/ml

• 1.33 g/ml

• 0.75 g/ml

Three examples of physical change are ___

• freezing of water, evaporation of gasoline, and rusting a nail

• sawing of wood, crushing a can, and toasting a marshmallow

• burning of gasoline, rotting of an egg, and exploding fireworks

• boiling of water, bursting of a balloon, and crumpling a piece of paper

Matter that has a definite volume and a definite shape is a ____.

• solid

• liquid

• gas

• plasma

Matter that has a definite volume but no definite shape is a ____.

• solid

• liquid

• gas

• plasma

Tags

NGSS.5-PS1-3

When you toss a rock into a pond it will sink. This is because the density of the rock is ___________ the density of the water.

• equal to

• less than

• greater than

When two or more substances are combined so each substance can be separated by physical means, the result is a(n)____.

• compound

• chemical change

• element

• mixture

According to the law of conservation of mass, if a 15 kg wooden log was chopped into 45 pieces, how many kilograms of wood would remain?

• 675 kg

• 30kg

• 15kg

• 3kg

In a solution, the substance that is being dissolved is known as the _________________.

• solvent

• solution

• solute

• saturation

In a solution, the substance that is doing the dissolving is known as the ________________.

• solute

• solvent

• solution

• saturation

On the pH scale, a reading of ___________ represents acidic substances.

• 1-6.9

• 7

• 7.1-14