Counting Atoms and Balancing Equations

Which of the following is an acid?

• H₂O

• NaOH

• H₂SO₄

Tags

NGSS.HS-PS1-1

Which of the following is a base?

• H₂O

• NaOH

• H₂SO₄

Which of the following is a compound?

• Cl₂

• NH₃

• O₂

Tags

NGSS.MS-PS1-1

Which of the following is an element?

• Cl₂

• NH₃

• CO₂

Tags

NGSS.MS-PS1-1

Is this a balanced equation? Zn + H₂SO4 --> ZnSO₄ + H₂

• Yes

• No

• I don't know

Tags

NGSS.MS-PS1-5

Identify the reactant in this equation.

Zn + H_2SO₄ --> ZnSO₄ + H₂

• Zn

• H₂

• ZnSO4

Tags

NGSS.MS-PS1-2

Identify the product in this equation.

Zn + H₂SO₄ --> ZnSO₄ + H₂

• Zn

• H₂SO₄

• ZnSO₄

Tags

NGSS.MS-PS1-2

How many atoms of S (Sulfur) are in this?

Zn+ H₂SO₄

• 1

• 2

• 4

Tags

NGSS.MS-PS1-1

Identify the elements in this equation.

Zn + H₂SO₄ --> ZnSO₄ + H₂

• Zn + H₂SO₄

• H₂ + Zn

• ZnSO₄ + H₂

Tags

NGSS.MS-PS1-1

Is this equation balanced?

Na_2S + 2HCl --> 2NaCl + H₂S

• Yes

• No

• I don't know

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2