Elements, Atoms, Molecules and Compounds

How many elements are in C₆H₁₂O₆?

• 1

• 2

• 3

• 6

Tags

NGSS.MS-PS1-1

How many Hydrogen atoms are present in H₂0?

• 2

• 4

• 1

• 0

Tags

NGSS.MS-PS1-1

What is a compound?

• an atom with more electrons than protons
• a substance in which the atoms of two or more elements are combined together
• an atom with more neutrons than protons
• a substance in which the atoms of three or more elements are combined together

Tags

NGSS.MS-PS1-1

Atoms combine to form _______. 

• electrons
• molecules
• nuclei
• neutrons

Tags

NGSS.MS-PS1-1

Which of the following chemical formulas represents a compound? 

• C₃
• O₂
• CH₃CHO
• H₂

Tags

NGSS.MS-PS1-1

Are these molecules also compounds?

• YES
• NO

Tags

NGSS.MS-PS1-1

2H₂O
How many H₂O molecules are present?

• 1
• 4
• 2
• 8

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

2H₂O
How many Oxygen atoms are present?

• 2
• 4
• 1
• 5

Tags

NGSS.MS-PS1-1

 2H₂O
How many Hydrogen atoms are present?

• 2
• 4
• 1
• 10

Tags

NGSS.MS-PS1-1

How many atoms are there TOTAL in:
H₂SO₄

• 6
• 5
• 7
• 3

Tags

NGSS.MS-PS1-1