What does the 2 represent in front of H 2 represent? 2H 2 + O 2 →2H 2 O

It indicates that there are 2 separate hydrogen molecules in the reaction

It indicates that there are 4 hydrogen atoms after you add the coefficient and the subscript

It indicate that there are a total of 4 hydrogen atoms all bonded together as a single molecule

It indicates that there are 2 hydrogen molecules chemical bonded together in the reaction

A lab group reacts sodium oxide (Na 2 O) with hydrochloric acid (HCl) to produce sodium chloride (NaCl) and water (H 2 O). When writing their lab report, they came up with the following equation to represent the reaction: Na 2 O + HCl →NaCl + H 2 O

No, since there are two sodium atoms as reactants, but only one sodium atom as a product.

Yes, since there are 5 reactant atoms and 5 product atoms.

Yes, since there is a subscript of 2 on both sides on the equation.

No, since there is a liquid and a solid as reactants, but a gas and a solid as a product.

A student draws a picture of the products and reactants of a chemical reaction. What, if anything, is wrong with the drawing?

The drawing is correct because there are 12 atoms of each type on each side of the arrow.

The drawing is wrong because there are more chemicals on the products side.

The drawing is correct because there are 12 compounds on each side of the arrow.

The drawing is wrong because there are different compounds on each side of the arrow.

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Science

Chemistry

Conservation Of Matter

Law Of Conservation Of Matter Reactions

Law of Conservation of Matter - Reactions

Authored by Kennedy Neal

Science

9th Grade

SPS3 covered

Used 32+ times

Law of Conservation of Matter - Reactions

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15 questions

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MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What reaction type is the following chemical equation?
Zn(s) + 2HCl(aq) = ZnCl₂(aq) + H₂(g)

Single Replacement

Double Replacement

Synthesis

Decomposition

Tags

SPS3.a

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What reaction type is the following chemical equation?
HCl + KOH → KCl + H₂O.

Single Replacement

Double Replacement

Synthesis

Decomposition

Tags

SPS3.a

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What reaction type is the following chemical equation?
2HgO(s)→2Hg(l)+O₂(g)

Single Replacement

Double Replacement

Synthesis

Decomposition

Tags

SPS3.a

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What reaction type is the following chemical equation?
Zn(s) + 2HCl(aq) = ZnCl₂(aq) + H₂(g)

Single Replacement

Double Replacement

Synthesis

Decomposition

Tags

SPS3.a

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What reaction type is the following chemical equation?
H₂CO₃(aq)→CO₂(g)+H₂O(l)

Single Replacement

Double Replacement

Synthesis

Decomposition

Tags

SPS3.a

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What reaction type is the following chemical equation?
2CO+ O₂ →2CO₂

Single Replacement

Double Replacement

Synthesis

Decomposition

Tags

SPS3.a

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What type of reaction is the following chemical equation?
4Al + 3O₂ →2Al₂O₃

Single Replacement

Double Replacement

Synthesis

Decomposition

Tags

SPS3.a

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Law of Conservation of Matter - Reactions

What reaction type is the following chemical equation?
Zn(s) + 2HCl(aq) = ZnCl₂(aq) + H₂(g)

What reaction type is the following chemical equation?
HCl + KOH → KCl + H₂O.

What reaction type is the following chemical equation?
2HgO(s)→2Hg(l)+O₂(g)

What reaction type is the following chemical equation?
Zn(s) + 2HCl(aq) = ZnCl₂(aq) + H₂(g)

What reaction type is the following chemical equation?
H₂CO₃(aq)→CO₂(g)+H₂O(l)

What reaction type is the following chemical equation?
2CO+ O₂ →2CO₂

What type of reaction is the following chemical equation?
4Al + 3O₂ →2Al₂O₃

What type of reaction is the following chemical equation?
Fe(s) + CuSO₄ (aq)→ FeSO₄ (aq) + Cu(s)

Jenny wanted to make 3 molecules of a substance made with aluminum and oxygen. How many aluminum and oxygen atoms will she need?

What does the 2 represent in front of H₂ represent?
2H₂ + O₂→2H₂O

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Law of Conservation of Matter - Reactions

What reaction type is the following chemical equation?Zn(s) + 2HCl(aq) = ZnCl2(aq) + H2(g)

What reaction type is the following chemical equation?HCl + KOH → KCl + H2O.

What reaction type is the following chemical equation?2HgO(s)→2Hg(l)+O2(g)

What reaction type is the following chemical equation?Zn(s) + 2HCl(aq) = ZnCl2(aq) + H2(g)

What reaction type is the following chemical equation?H2CO3(aq)→CO2(g)+H2O(l)

What reaction type is the following chemical equation?2CO + O2 →2CO2

What type of reaction is the following chemical equation?4Al + 3O2 →2Al2O3

What type of reaction is the following chemical equation?Fe(s) + CuSO4 (aq)→ FeSO4 (aq) + Cu(s)

Jenny wanted to make 3 molecules of a substance made with aluminum and oxygen. How many aluminum and oxygen atoms will she need?

What does the 2 represent in front of H2 represent?2H2 + O2→2H2O

Access all questions and much more by creating a free account

Similar Resources on Wayground

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Discover more resources for Science

What reaction type is the following chemical equation?
Zn(s) + 2HCl(aq) = ZnCl₂(aq) + H₂(g)

What reaction type is the following chemical equation?
HCl + KOH → KCl + H₂O.

What reaction type is the following chemical equation?
2HgO(s)→2Hg(l)+O₂(g)

What reaction type is the following chemical equation?
Zn(s) + 2HCl(aq) = ZnCl₂(aq) + H₂(g)

What reaction type is the following chemical equation?
H₂CO₃(aq)→CO₂(g)+H₂O(l)

What reaction type is the following chemical equation?
2CO+ O₂ →2CO₂

What type of reaction is the following chemical equation?
4Al + 3O₂ →2Al₂O₃

What type of reaction is the following chemical equation?
Fe(s) + CuSO₄ (aq)→ FeSO₄ (aq) + Cu(s)

What does the 2 represent in front of H₂ represent?
2H₂ + O₂→2H₂O