Grade 10 Chemistry Review

The atomic mass of an atom is made up of:

• protons + neutrons
• protons + electrons
• electrons + neutrons
• protons + electrons + neutrons

A neutral sulfur atom has _____ electrons.

• 32
• 16
• 2
• 6

Valence electrons are always found on the:

• first electron shell
• second electron shell
• third electron shell
• outermost electron shell

What is Aluminum's ionic charge?

• +3
• -5
• -3
• +13

How many valence electrons does chlorine have?

• 1
• 7
• 17
• 35

Magnesium is a(n):

• alkali metal
• alkaline earth metal
• halogen
• noble gas

This is a Bohr diagram for:

• aluminum
• gallium
• silicon
• boron

Which of the following atoms has more than one ionic charge?

• lead
• silver
• zinc
• radium

Na₂S is called:

• disodium monosulfide
• sodium sulfate
• sodium sulfide
• none are correct

Ba(OH)₂ is called:

• barium hydroxide
• barium hydro-oxygen
• barium dihydride
• barium oxate