Properties of Matter

Alisa placed a small seashell on the pan of a balance. What other tool does she need to determine the density of the seashell?

• scale

• calculator

• thermometer

• graduated cylinder

Magnetism, solubility, and malleability are physical properties of matter. What makes these properties different from chemical properties?

• Physical properties relate to elements rather than compounds.

• Physical properties appear only after a chemical change occurs.

• Physical properties can be observed without attempting to change the identity of the substance.

• Physical properties describe elements in the solid state rather than in the liquid or gas state.

A child is upset because his ice cream is melting. He thinks he now has less dessert. Which of the following explanations correctly states why the child is incorrect?

• He actually has more, not less, ice cream

• No mass is lost during a change of state

• The mass will increase if he freezes the melted ice cream.

• Mass is lost only during certain changes of state, such as freezing.

Which of the following is a way in which elements and compounds are similar?

• Elements and compounds are both pure substances.

• Elements and compounds are both listed on the periodic table.

• Elements and compounds are both made up of different kinds of atoms.

• Elements and compounds can both be broken down by physical changes.

What is the state of the substance in jar A?

• Gas

• Liquid

• Solid

What is the state of the substance in jar B?

• Gas

• Liquid

• Solid

What is the state of the substance in jar C?

• Gas

• Liquid

• Solid

Which process is an example of a physical change?

• burning

• rusting

• flattening

• decomposing

Which process represents a chemical change?

• A lake freezes over into ice.

• A metal bar is rolled into a flat sheet.

• Vinegar bubbles when baking soda is added.

• Sand, water, and salt combine to form a mixture.

Chemical changes result in new substances, but physical changes do not. Which process is an example of a chemical change?

• chopping a tree

• cooking a steak

• heating a cup of tea

• drying clothes in the dryer