CH 4 Atoms and Bonding

Choose the particle that has no charge.

• nucleus
• neutron
• proton
• electron

Which particle has a positive charge?

• electron
• orbital
• proton
• neutron

A nonpolar bond is formed when 2 atoms share electrons unequally

• True

• False

When electrons are transferred between two atoms, a covalent bond is formed

• True

• False

If a atom gains an electron, it becomes

• a negatively charged ion

• an isotope

• an apple

• a positively charged ion

Each dot on a dot diagram represents one

• proton

• atomic mass unit

• energy level

• valence electron

Which noble gas is an exception to the rule of 8 valence electrons creating chemical stability?

• helium

• hydrogen

• neon

• radon

How many valence electrons does calcium have?

• 2

• 4

• 6

• 7

When an atom gains electrons, it becomes a

• positive ion

• negative ion

• neutral ion

• neutral atom

Which is the correct name for CaBr₂?

• Calcium Bromine

• Bromine Calcium

• Calcium Bromide

• Carbon and Bromine