Matter

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

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

• compound

• pure substance

• homogenous mixture

• heterogeneous mixture

CO2, NaCl, and HCl may all be classified as

• elements

• compounds

• homogenous mixtures

• heterogeneous mixtures

Milk, paint, and mayonnaise are all examples of which of the following.... compounds / elements / mixtures.

Which of the follow changes result in a new substance being formed. Physical/ Chemical

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

What is the mass of a cube measuring 3 cm on each side that has a density of 8.1 g/cm3 ?

A marble has a mass of 3.75 g. When placed in a graduated cylinder the water level changes from 25 mL to 28 mL. What is the density of the marble?

Classify the following as a chemical change (C) or a physical change (P).

Chopping wood

Classify the following as a chemical change (C) or a physical change (P).

Burning wood