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