Intro to Matter review

Which of the following changes demonstrates a chemical property?

• substance breaks in half

• substance combusts

• hammer bounces off substance

• substance floats in water

Which of the following is a solution?

• salt water

• macaroni and cheese

• cake mix

• vegetable soup

The abilities to dissolve in water and to conduct electricity are examples of

• natural properties.

• chemical properties.

• natural laws of matter.

• physical properties.

Which of the following is a substance:?

• table salt

• seawater

• sand

Which is the correct equation for calculating density?

• Density = Mass/Volume

• Density = Mass/Weight

• Density = Volume/Mass

• Density = Volume/Weight

What is the density of an object whose mass is 180 grams and whose volume is 45 cm³?

• 4 cm³/g

• 0.25 g/cm³

• 4 g/cm³

• 0.25 cm³/g

Weight is a flawed measure of mass because it

• is not used in other countries.

• is affected by the force of gravity.

• tends to fluctuate.

• can be influenced by temperature and pressure

What is one way to measure volume?

• triple beam balance

• graduated cylinder

• digital scale

• all of the above

Which of the following describes a physical change?

• A marshmallow burns over an open flame.

• Icicles melt from a rooftop.

• A cat eats a piece of fish.

• Milk turns sour.

Which of the following describes a chemical change?

• clear liquids mix, producing a cloudy liquid with yellow chunks

• silver coins are melted down and shaped into a solid brick

• salt is added to a pot of hot water, and the water’s boiling point changes

• an apple is chopped into eight slices