Physical Science Second Semester Exam '20-'21

H is the symbol for which element?

• Helium

• Hydrogen

• Mercury

• Halogen

Na is the chemical symbol for which element?

• Sodium

• Nitrogen

• Neon

• Nastium

K is the chemical symbol for which element?

• Krypton

• Potassium

• Knoxium

• Kalcium

Ca is the chemical symbol for which element? 

• Carbon
• Chlorine
• Calcium

C is the chemical symbol for which element? 

• Calcium
• Chlorine
• Carbon

What is H₂SO₄ 
(Sulfuric Acid) made up of?

• 2 hydrogen, 1 sulfur, 4 oxygen
• 1 hydrogen, 2 sulfur, 4 oxygen
• 2 hydrogen & 4 sodium
• 1 hydrogen & 6 sodium

Tags

NGSS.MS-PS1-1

What is C₃H₈ 
(methane) made up of?

• 1 carbon & 1 hydrogen
• 3 carbons & 8 hydrogens
• 8 carbons & 3 hydrogen
• 11 carbons & 11 hydrogen

Tags

NGSS.MS-PS1-1

How many oxygen atoms are in this chemical formula?

• 7 oxygen atoms
• 4 oxygen atoms
• 3 oxygen atoms
• 1 oxygen atom

Tags

NGSS.MS-PS1-1

Which is the correct formula for:

three hydrogen (H)

one sulfur (S)

four oxygen (O)

• H₃SO₄

• HSO₄

• H₄S₃O

• H₂O

Tags

NGSS.MS-PS1-1

USE THE PERIODIC TABLE

How many valence electrons does sodium have?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1