Physical and Chemical Reactions

Physical and Chemical Reactions

7th Grade

13 Qs

quiz-placeholder

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Physical and Chemical Reactions

Physical and Chemical Reactions

Assessment

Quiz

Science

7th Grade

Hard

NGSS
MS-PS1-5, MS-PS1-2, MS-PS1-4

+2

Standards-aligned

Created by

Jennifer Raygoza

Used 1K+ times

FREE Resource

13 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

A chemical change is different than a physical change because in a chemical change...

Chemicals are used

Molecules do not physically touch

A new substance is formed and in a physical change no new substance is formed

The change can be seen but in a physical change it cannot

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

In a chemical reaction...

The atoms of the reactants always stay together to form the products

The atoms of the reactants unbond, rearrange, and then rebond to form the products

New atoms are formed which combine to make the products

Some atoms disappear while others multiply to form the products

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

In a chemical reaction, mass is conserved. This means that

The mass of the products stays the same during a chemical reaction

The mass of the products is always twice the mass of the reactants

The mass of the reactants stays the same during a chemical reaction

The type and number of atoms in the reactants equals the type and number of atoms in the products

Tags

NGSS.MS-PS1-5

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

If the reactants on the left side of a chemical equation are C3H8 + 5O2, the products in a balanced equation could be

2CO2 + 3H2O

3CO + 4H2O

3CO2 + 4H2O

4CO2 + 3H2O

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

If two substances react and the temperature of the mixture increases, the reaction is

Not one that produces anything new

Exothermic

One that needs a catalyst

Endothermic

Tags

NGSS.MS-PS1-4

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

If two substances react and the temperature of the mixture decreases, the reaction is

Endothermic

Never going to happen unless it is heated

Exothermic

one that causes atoms to be destroyed

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The law of conservation of mass states

matter can not be created or destroyed

matter can be created and destroyed

matter can be changed and created

matter can be rearranged and destroyed

Tags

NGSS.MS-PS1-5

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