Grade 10 - Finals Practice

The positive ions tend to _____________ electrons.

• lose

• gain

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The negative ions tend to _____________ electrons.

• lose

• gain

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons does hydrogen have?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-1

Why do all bonds form?

• so the number of protons equals the number of electrons

• so an atom can become unstable

• to fill the outermost energy level

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What type of elements form cations?

• metals

• nonmetals

• metalloids?

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Ionic or covalent?
Na  Br

• Ionic
• Covalent

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Ionic or covalent?
H  O

• Ionic
• Covalent

Tags

NGSS.HS-PS1-2

Ionic or covalent?
C  H

• Ionic
• Covalent

Tags

NGSS.HS-PS1-1

Ionic or covalent?
N  H

• Ionic
• Covalent

Tags

NGSS.HS-PS1-1

What is the rule for figuring out if it is ionic or covalent?

• Covalent bonds form between two metals.
• Ionic bonds form between two metals.
• Covalent bonds form between a metal and a non-metal.
• Ionic bonds form between a metal and a non-metal.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2