Chemical Equation Word Problems

Identify the product(s) in the following word equation:

sodium reacts with chlorine to yield sodium chloride

• sodium

• sodium chloride

• sodium and chlorine

• sodium and sodium chloride

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which statement is TRUE of reactants in a chemical reaction?

• You write them on the right-hand side of the arrow.

• They are what get produced in a chemical reaction.

• They always stay the same.

• Are the substances that you start with.

What are the new substances that are formed in a chemical reaction called?

• reactants

• atoms

• products

• reagents

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What state of matter is this substance?

• solid

• liquid

• gas

• aqueous

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What state of matter is this substance?

• solid precipitate

• dissolved in water

• released as a gas

• liquid

Tags

NGSS.MS-PS1-4

According to the chemical equation, which compound would form a precipitate? A precipitate is a insoluble solid substance formed after a chemical reaction.

• Co(NO₃)₂

• NaOH

• NaNO₃

• Co(OH)₂

Tags

NGSS.MS-PS1-2

What does the symbol inside the circle mean?

• "yields, or produces"

• "dissolved in water"

• "forms a precipitate"

• "released as a gas"

Tags

NGSS.MS-PS1-2

Which of these is NOT the correct way to read the symbol in a chemical equation?

• (g) = grams

• (aq) = solution

• (s) = solid

• (l) = liquid

Which of the following chemical equations is the most accurate and most complete for the word equation:

Solid magnesium is burned in oxygen gas to produce solid magnesium oxide.

• Mg + O₂→ MgO (aq)

• Mg+ O→ MgO (s)

• Mg + O₂ → MgO (s)

• Mg (s) + O₂ (g)→ MgO (s)

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Solid sodium reacts with chlorine gas to produce sodium chloride crystals. Which equation represents the reaction mentioned?

• NaCl (s)→ Cl(g) + Na(s)

• Na (s)+ CO₂ (g)→ NaCO₂ (s)

• Na (s) + Cl₂ (g)→ NaCl (s)

• Na (g) + Cl (s) → NaCl (s)

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5