Chemical Bonding Exam

 Covalent bond is formed between atoms of ________

• A. metals and  metals
• B. non-metals and non-metals
• C. metals and non-metrals
• D. metaliods and non-metals

An atom that has lost or gained electrons becomes a (an) _______. 

• proton
• nuetron
• electron
• ion

When a Na atom, loses one electron, it gets a charge of _______.  

• -1
• 0
• +1
• +11

Metals tend to _______ electrons to become _____ ions.

• lose , positive
• gain, negative
• lose,negative
• gain,positive

Tags

NGSS.HS-PS1-2

Hydrogen Fluoride has a (an) ________ bond and its chemical formula is ________. 

• covalent, HF
• ionic, HF
• covalent, H2F
• ionic, H2F

Magnesium Bromide is a (an) ________ compound

• metallic
• covalent
• ionic
• organic

How is the bond in F2 different from the bond in KCl ? 

• F2 is covalent and KCl is ionic
• F2 is ionic and KCl is covalent
• F2 is ionic and KCl is ionic
• F2 is ionic and KCl is ionic

Tags

NGSS.HS-PS1-3

In an ionic bond, electrons are _________ . 

• lost or gained
• shared
• shared and gined
• none correct

When a Cl atom gains an electron, it gets a charge of ________

• -1
• +1
• 0
• +2

Charged atoms are called as _____. 

• positive
• negative
• ion
• proton

Tags

NGSS.HS-PS2-4