Chapter 1 Building Blocks of Matter

The atomic number of an element is

• the number of protons it has

• the number of neutrons it has

• the number of hydrogen atoms

All matter is made up of

• earth, wind, fire, and water

• electrical energy

• atoms

When two substances combine chemically, the new substance that forms has properties that

• are the same as those of the original two substances

• are different from those of the original two substances

• cannot be predicted

Particles in an atom's nucleus that are positively charged are called

• electrons

• protons

• neutrons

Two atoms with the same number of protons must be the same element.

• False

• True

A negatively charged particle that moves around the nucleus of an atom is called

• proton

• neutron

• electron

Physical Properties may describe the _______ of a material.

• color

• texture

• mass

• weight

• all of the above

A ____ is a type of matter made from a combination of two or more elements.

• molecule

• an atom

• a compound

An ____ is the basic building block of all matter.

• element

• atom

Properties of metal:

• shiny

• solid

• malleable

• all of the above