g 9 quarter 2 exam

How many valence electrons does Oxygen (O) have?

• 6

• 8

• 15

• 16

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NGSS.MS-PS1-1

How many valence electrons does Oxygen (O) have?

• 6

• 8

• 15

• 16

Tags

NGSS.MS-PS1-1

How many atoms of hydrogen are in a sugar molecule with the formula C₆H₁₂O₆

• 12

• 6

• 24

• 18

Tags

NGSS.MS-PS1-1

Polar molecules form due to ___________ sharing of valence electrons.

• equal

• unequal

• greater

• group

the compound in which its atoms are bonded by covalent bonds called ...............

• Ionic compound

• molecule

• Nonpolar Covalent

• Van der Waals Force

Which of the following is true about (non-polar) compounds?

• High melting point

• Cannot dissolve in water

• Can dissolve in water

• Can conduct electricity

In an electron dot diagram, two pairs of shared electrons represents a ...

• single bond
• double bond
• triple bond
• quadruple bond

Tags

NGSS.MS-PS1-1

What is the correct formula for this molecule?

• NH
• N₃H
• NH₃
• NH₄

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NGSS.MS-PS1-1

Electronegativity is a measurement of the ability of a nucleus to:

• attract bonding electrons

• looses electrons

• attract electrons in the non-valence energy levels

• gains electrons

How are Chemical compounds expressed as?

• Chemical Chart

• Chemical name

• Chemical Table

• Chemical Formula

Tags

NGSS.MS-PS1-1