Module 3 Exam Review: Chemistry

State the number of valence electrons for the following atoms.

• 1

• barium

• 8

• rubidium

• 3

• neon

• 2

• bromine

• 7

• indium

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

An ion with 17 protons and 18 electrons will have a charge of ​ ​ (a)  

• -1
• 0
• -2
• +1
• +2

An atom with 6 valence electrons will ​ (a)   electrons when bonding ionically. And an atom that has 2 valence electrons will ​ (b)   electrons.

• gain
• lose
• share, gain
• lose, share
• gain, gain

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

How many valence electrons does this atom have?

• 2

• 4

• 6

• 8

Tags

NGSS.HS-PS1-1

Match the following:

• positive ion

• Cation

• transfers electrons

• Anion

• negative ion

• Covalent Bond

• shares electrons

• Ionic Bond

Select the formulas that are ionic compounds.

• BeCl₂

• NaOH

• SO₂

• CF₄

• Al₂(SO₄)₃

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-3

What is the correct formula for the bonding of Ca and N

• CaN

• Ca₃N₂

• Ca₂N₃

• Ca₃N₃

Tags

NGSS.HS-PS1-2

What is the correct formula for Al & P?

• Al₃P₃

• Al₃P₂

• Al₂P₃

• AlP

In an ionic bond the

• cation (positive) ion loses electrons to the anion (negative) ion

• anion (negative) ion loses electrons to the anion (positive) ion

• cation (positive) ion gains electrons from the anion (negative) ion

• electrons are shared

Tags

NGSS.HS-PS1-2

The two lines between N and O represent ​ (a)   electrons being shared.

• 4
• 2
• 6
• 8