Section 2 Properties of Matter

The change of one substance to another is a __________ change.

Chemical

In comparison, a _____________ produces new substances.

Chemical change

Elements of which two or more may form a __________

Compound

The mass of all substances before a chemical change equals the mass of all substances after a chemical change. This is called the law of _________.

Conservation of mass

When substances go through a physical change, mass is always _____________

Conserved

Substances which, when made up of like atoms, are ____________

Elements

The melted wax, as it burns, combines with gaseous oxygen in the air. After the chemical change, water vapor and carbon dioxide gas are formed. The mass of all substances before a chemical change ____________the mass of all substances after a chemical change.

Equals

Mixtures which, if the different materials are easily distinguished are_____________

Heterogeneous

Mixtures which, if blended evenly throughout, are __________________

Homogeneous

A beam of light is _______________as it passes through a solution, but _______ be seen as it passes through a colloid.

Invisible, can

Water is a clear, colorless _____________ at room temperature.

Liquid

When a candle burns, physical and chemical changes take place. The ________of the wax is a physical change.

Melting

On a hot summer day, water vapor will condense into water droplets on the outside of a glass of iced tea. The glass of iced tea is a __________ of sugar, tea, lemon, and water.

Mixture

Substances of which two or more may combine in an easily separated manner to form __________

Mixtures

Appearance and behavior are __________ properties.

Physical

Scientists try to explain how changes in substances take place. By applying energy, you can tear a sheet of paper into pieces and cause a _______________ in the paper.

Physical change

The melting of the ice in iced tea is a ______________.

Physical change

The words clear and colorless describe two __________________of water

Physical properties

To separate a solid from a liquid, such as salt from seawater, a process using the _________ of boiling point called __________ is used.

Physical property, distillation

Matter is composed of

Various substances