Reactants and Products Lesson

Reactants and Products Lesson

7th Grade

15 Qs

quiz-placeholder

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Reactants and Products Lesson

Reactants and Products Lesson

Assessment

Quiz

Science

7th Grade

Hard

NGSS
MS-PS1-5, MS-PS1-2, HS-PS1-7

+3

Standards-aligned

Created by

Lisa Thompson

FREE Resource

15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The following chemical equations represent three different chemical reactions.

3NaOH + H3PO4 → Na3PO4 + 3H2O

2Mg + O2 → 2MgO

Pb(NO3)2 + 2NaI → PbI2 + 2NaNO3


Which Statement is correct choose the best answer

MgO is a reactant in one of the chemical reactions.

Na3PO4 is a product in one of the chemical reactions.

A total of five oxygen atoms are involved in the first reaction.

H3PO4 shows that three atoms of oxygen are involved in the reaction.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The substances listed on the right side of a chemical equation are the

Yields

Reactants

Products

Precipitates

Tags

NGSS.MS-PS1-5

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In chemical reactions, what does the principle of conservation of mass mean?

Matter is not created or destroyed.

The total mass of the reactants is greater than the total mass of the products.

The total mass of the reactants is less than the total mass of the products.

Matter is not changed.

Tags

NGSS.MS-PS1-5

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Chemical reactions happen when:

The atoms grow until a substance changes state.

The products break apart into different substances

The atoms rearrange themselves to form new reactants.

The bonds between atoms in reactants break and reform to make new substances.

Tags

NGSS.MS-PS1-5

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Electrolysis of water (H2O) produces which two substances?

O12 and H12

N2 and H2

O22 and N11

O2 and H2

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of these is NOT true of a chemical equation?

The reactants are on the left side of the equation.

The products are on the right side of the equation.

The two sides of the equation have different types and numbers of atoms.

There may be more than one reactant and more than one product.

Tags

NGSS.HS-PS1-7

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A whole number to the left (Coefficient) of a formula tells:

Volume of a substance.

The average number of molecules.

How many times a substance has undergone a chemical reaction.

How many molecules of that substance are involved in a reaction.

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