Chemical Bonding and Reactions Unit Exam

This structure is called a(n)

• crystal lattice
• molecule
• electron sea

Tags

NGSS.HS-PS1-3

In order to have a stable arrangement elements need ___________ electrons in the outer shell

• 5
• 6
• 7
• 8

Tags

NGSS.HS-PS1-1

Group 1 has ___________ valence electron(s)

• 1
• 5
• 3
• 8

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Metals react by ____________ electrons

• losing
• gaining

Nonmetals react by ____________ electrons

• losing
• gaining

Tags

NGSS.HS-PS1-2

When a neutral atom loses a valence electrons, it loses a negative charge it becomes a ___________________________ ion

• positive
• negative

When a neutral atom gains a valence electron, it gains a negative charge and becomes _______________ ion

• positive 
• negative

The force of attraction between two oppositely charged ions

• ionic bond
• chemical bond
• covalent bond

Tags

NGSS.HS-PS2-4

In a chemical formula and a chemical name which ion is written first

• positive ion
• negative ion

When a bond is formed by two atoms sharing electrons it is called a ______________ bond

• chemical
• covalent
• ionic
• metallic