CP Chemistry Chemical Reaction Basics (4/17/2025)

Last updated 11 months ago

12 questions

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2

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1

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1

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4

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3

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0

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2

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CP Chemistry Chemical Reaction Basics (4/17/2025)

Last updated 11 months ago

12 questions

Required

2

Required

1

Required

1

Required

4

Balance the Equation(use the format of 2, 4, 1,3)

N2 + O2 + H2O → HNO3

Required

3

Balance the Equation(use the format of 2, 4, 1)

__Al + _Br2 → __AlBr3

Required

0

Required

2

Required

2

Draggable item		Corresponding Item

Required

2

Draggable item		Corresponding Item

Required

2

Required

2

The skeleton chemical equation for the reaction between zinc metal and hydrochloric acid is shown. What change needs to be made in order to balance this reaction equation?
Zn + HCl → ZnCl2 + H2

Change the subscript in H2 to 1

put a coefficient 2 in front of HCl

change the subscript in ZnCl2 to 1

put a coefficient 2 in front of Zn

Examine the following reaction, then identify the reactants and products:

H2O2 --> H2O + O2

H2O2
O2
H2O

Reactant(s)
Product(s)

Is it possible to have a chemical reaction where there is only one reactant?

Yes

No

If a gas is produced in a chemical reaction, does that gas count as a product?

Yes

No

Balance the Equation(use the format of 2, 4, 1,3)

N2 + O2 + H2O → HNO3

Balance the Equation(use the format of 2, 4, 1)

__Al + _Br2 → __AlBr3

Students want to gather evidence for the claim that the number of atoms before a chemical reaction is equal to the number of atoms after the chemical reaction. They decide to react vinegar and baking soda in a sealed plastic bag. Which of the following would provide the evidence the students need?

The plastic bag did not change in any way, indicating that it was not involved in the reaction.

The mass of the baking soda was exactly equal to the mass of the vinegar used to create the chemical reaction.

The plastic bag did not change in any way, indicating that it was not involved in the reaction.

Bubbles were produced during the reaction, which meant that a gas was being produced.

Which of the following is true regarding the atoms involved in a chemical reaction?

Some of the atoms present before the reaction will always be lost during a chemical reaction.

During a chemical reaction, atoms will always be combined into a much larger molecule.

Some of the atoms will always be changed into a different type of atom by a chemical reaction.

The same number of each type of atom will always be present before and after a chemical reaction takes place.

Match the nonmetal with its expected reaction product.

Draggable item		Corresponding Item
Chlorine with sodium bromide		Iron oxide and sulfur dioxide
Oxygen with iron sulfide		Potassium fluoride and iodine
Fluorine with potassium iodide		Sodium chloride and bromine

Identify the reaction types based on these metals.

Draggable item		Corresponding Item
Calcium and sulfur		Produces sodium hydroxide and hydrogen
Sodium reacts with water		Gives iron chloride and hydrogen gas
Iron with hydrochloric acid		Results in calcium sulfide

What is the total number of atoms in 2H2 + O2?

5

4

8

6

In balancing 3H2 + O2 → 2H2O, which is the coefficient of O2?

4

1

2

3

The skeleton chemical equation for the reaction between zinc metal and hydrochloric acid is shown. What change needs to be made in order to balance this reaction equation?
Zn + HCl → ZnCl2 + H2

Change the subscript in H2 to 1

put a coefficient 2 in front of HCl

change the subscript in ZnCl2 to 1

put a coefficient 2 in front of Zn

Examine the following reaction, then identify the reactants and products:

H2O2 --> H2O + O2

H2O2

O2

H2O

Reactant(s)

Product(s)

Is it possible to have a chemical reaction where there is only one reactant?

Yes

No

If a gas is produced in a chemical reaction, does that gas count as a product?

Yes

No

Students want to gather evidence for the claim that the number of atoms before a chemical reaction is equal to the number of atoms after the chemical reaction. They decide to react vinegar and baking soda in a sealed plastic bag. Which of the following would provide the evidence the students need?

The plastic bag did not change in any way, indicating that it was not involved in the reaction.

The mass of the baking soda was exactly equal to the mass of the vinegar used to create the chemical reaction.

The plastic bag did not change in any way, indicating that it was not involved in the reaction.

Bubbles were produced during the reaction, which meant that a gas was being produced.

Which of the following is true regarding the atoms involved in a chemical reaction?

Some of the atoms present before the reaction will always be lost during a chemical reaction.

During a chemical reaction, atoms will always be combined into a much larger molecule.

Some of the atoms will always be changed into a different type of atom by a chemical reaction.

The same number of each type of atom will always be present before and after a chemical reaction takes place.

Match the nonmetal with its expected reaction product.

Chlorine with sodium bromide

Iron oxide and sulfur dioxide

Oxygen with iron sulfide

Potassium fluoride and iodine

Fluorine with potassium iodide

Sodium chloride and bromine

Identify the reaction types based on these metals.

Calcium and sulfur

Produces sodium hydroxide and hydrogen

Sodium reacts with water

Gives iron chloride and hydrogen gas

Iron with hydrochloric acid

Results in calcium sulfide

What is the total number of atoms in 2H2 + O2?

5

4

8

6

In balancing 3H2 + O2 → 2H2O, which is the coefficient of O2?

4

1

2

3

CP Chemistry Chemical Reaction Basics (4/17/2025)

CP Chemistry Chemical Reaction Basics (4/17/2025)

Balance the Equation(use the format of 2, 4, 1,3)____N2 + ____O2 + ____H2O → ____HNO3

____N2 + ____O2 + ____H2O → ____HNO3

Balance the Equation(use the format of 2, 4, 1)____Al + _____Br2 → ____AlBr3

____Al + _____Br2 → ____AlBr3

The skeleton chemical equation for the reaction between zinc metal and hydrochloric acid is shown. What change needs to be made in order to balance this reaction equation?Zn + HCl → ZnCl2 + H2

Examine the following reaction, then identify the reactants and products:H2O2 --> H2O + O2

Is it possible to have a chemical reaction where there is only one reactant?

If a gas is produced in a chemical reaction, does that gas count as a product?

Balance the Equation(use the format of 2, 4, 1,3)____N2 + ____O2 + ____H2O → ____HNO3

____N2 + ____O2 + ____H2O → ____HNO3

Balance the Equation(use the format of 2, 4, 1)____Al + _____Br2 → ____AlBr3

____Al + _____Br2 → ____AlBr3

Students want to gather evidence for the claim that the number of atoms before a chemical reaction is equal to the number of atoms after the chemical reaction. They decide to react vinegar and baking soda in a sealed plastic bag. Which of the following would provide the evidence the students need?

Which of the following is true regarding the atoms involved in a chemical reaction?

Match the nonmetal with its expected reaction product.

Identify the reaction types based on these metals.

What is the total number of atoms in 2H2 + O2?

In balancing 3H2 + O2 → 2H2O, which is the coefficient of O2?

Balance the Equation(use the format of 2, 4, 1,3)

N2 + O2 + H2O → HNO3

N2 + O2 + H2O → HNO3

Balance the Equation(use the format of 2, 4, 1)

__Al + _Br2 → __AlBr3

__Al + _Br2 → __AlBr3

The skeleton chemical equation for the reaction between zinc metal and hydrochloric acid is shown. What change needs to be made in order to balance this reaction equation?
Zn + HCl → ZnCl2 + H2

Examine the following reaction, then identify the reactants and products:

H2O2 --> H2O + O2

Balance the Equation(use the format of 2, 4, 1,3)

N2 + O2 + H2O → HNO3

N2 + O2 + H2O → HNO3

Balance the Equation(use the format of 2, 4, 1)

__Al + _Br2 → __AlBr3

__Al + _Br2 → __AlBr3