Counting Atoms & Writing Chemical Equations Checkpoint

How many Hydrogen are in 4H₂O?

• 6
• 8
• 2
• 4

Tags

NGSS.MS-PS1-1

How many O's are in Al₂(SO₄)₃

• 4
• 12
• 7
• 24

Tags

NGSS.MS-PS1-1

Number of H in 3(NH₄)₂CrO₄

• 4
• 2
• 8
• 24

Tags

NGSS.MS-PS1-1

How many atoms are there TOTAL in:
H₂SO₄

• 6
• 5
• 7
• 3

Tags

NGSS.MS-PS1-1

How many Sodium (Na) are in 6NaCl?

• 1
• 12
• 6

2H₂ + O₂ --------> 2H₂O What  are the reactants?

• ----->
• 2H₂O
• 2H₂ +O₂

Tags

NGSS.MS-PS1-5

2H₂ + O₂ ----> 2H₂O What is the product?

• ------>
• 2H₂O
• 2H₂+ O₂

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

A subscript is the small number below a(n) ________ that tells the number of _______ of that element.

• element symbol; atoms
• atom; element symbol
• subscript; protons
• compound; elements

Tags

NGSS.MS-PS1-1

Which chemical formula correctly displays 1 atom of nickel and 2 atoms of Fluorine?

• niF2

• NIF₂

• Ni₁F₂

• NiF₂

Tags

NGSS.MS-PS1-1

What does the subscript in a chemical formula tell you? (a)  

• How many molecules are present
• How many atoms are present
• How many elements are present
• How many neutrons are present