Ionic and Covalent Compounds

Covalent compounds are formed between

• a metal and a nonmetal

• two nonmetals

• two metals

• ions

Tags

NGSS.MS-PS1-1

In covalent compounds, electrons are

• lost

• gained

• shared

• stolen

Tags

NGSS.MS-PS1-1

All nonmetals, except Hydrogen and Boron, need ______ valence electrons to become stable.

• 4

• 6

• 8

• 10

Tags

NGSS.HS-PS1-1

Which is the correct Lewis structure for HCl ?

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Tags

NGSS.MS-PS1-1

What is the correct Lewis structure for Cl₂ ?

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Tags

NGSS.MS-PS1-1

What is the Lewis Structure for CH₄ ?

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Tags

NGSS.MS-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.MS-PS1-1

In the compound N₂O, what does the subscript 2 indicate?

• There are 2 sodium atoms for each atom of oxygen

• There are 2 nitrogen atoms for each atom of oxygen

• There are 2 oxygen atoms for each atom of nitrogen

• Nitrogen atoms are twice a large as oxygen

Tags

NGSS.MS-PS1-1

Valence electrons are found

• in the innermost energy level of an atom

• in the middle energy levels of an atom

• in the outermost energy levels of an atom

How many Aluminum atoms are in Al₂O₃?

• 3

• 5

• 2

• 1

Tags

NGSS.MS-PS1-1