Atomic Structure Test

The name of the type of ion when electrons are lost.

• Cation

• Anion

• Neutron

• Proton

The mass of a single atom is measured in (a)   .

• Atomic Mass Units
• Grams
• Kilograms
• Pounds

Electrons are arranged in (a)   around the nucleus.

• Electron cloud
• Proton shell
• Neutron orbit
• Photon layer

Cations are formed by electrons being ____.

• Lost/Removed

• Gained/Added

• Shared

• Neutralized

Like/Same charges ___ each other.

• Repel

• Attract

• Ignore

• Combine

Match the following atomic states with their descriptions.

• An atom with more electrons than protons

• Negative

• An atom with more protons than electrons

• Ionized

• An atom that has lost or gained electrons

• Neutral

• An atom with equal number of protons and electrons

• Positive

Tags

Chm.1.1.1

He saw particles in a gas were attracted to the positive plate of the cathode ray tube.

• Thomson

• Rutherford

• Bohr

• Einstein

The group of elements that tend to gain electrons is (a)   .

• Nonmetals
• Metals
• Noble gases
• Alkali metals

One of his postulates was that atoms combine in whole number ratios. The scientist who proposed this was (a)  

• Dalton
• Einstein
• Bohr
• Rutherford
• Mr. O'Byrne

Match the following terms with their definitions.

• The smallest unit of a chemical element is called ___.

• Neutrons

• Isotopes have the same number of protons but different number of ___.

• Electrons

• Positively charged particles in an atom are called ___.

• Atoms

• Negatively charged particles in an atom are called ___.

• Protons