Matter Quiz (Unit 6)

Jenny blends together water, lemon juice and sugar in a pitcher. She has made a

• compound

• pure substance

• homogeneous mixture

• heterogeneous mixture

CO2, NaCl, and HCl may all be classified as

• elements

• compounds

• homogenous mixtures

• heterogeneous mixtures

An unknown solid is placed on a scale and has a mass of 2.5 grams. The solid then displaces 35 mL of water in

a graduated cylinder. Find the unknown solid’s density.

• 0.071 g/mL

• 14 g/mL

• 37.5 g/mL

• 90 g/mL

Milk, paint, and mayonnaise are all examples of

• compounds

• elements

• mixtures

Which of the following is not an example of a physical change?

• Cutting a piece of string in half.

• Crumpling a piece of paper into a ball

• Freezing water into an ice cube.

• Letting the food in your lunch box rot in your locker.

The law of conservation of mass states that matter can / cannot be created or destroyed, even after a chemical change.

• can

• cannot

Mixtures can be separated chemically / physically

• chemically

• physically

Compounds can only be separated chemically / physically.

• chemically

• physically

Physical / chemical changes result in a new substance being formed.

• physical

• chemical

Melting point, viscosity, and density are all examples of physical / chemical properties.

• physical

• chemical