Science extra credit

Science extra credit

8th Grade

20 Qs

quiz-placeholder

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Science extra credit

Science extra credit

Assessment

Quiz

Science

8th Grade

Practice Problem

Hard

NGSS
MS-PS1-5, MS-PS1-4, MS-PS1-1

+2

Standards-aligned

Created by

Mostafa A

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following represent a chemical change?

Melting of ice
Rusting of iron, burning of wood, and digestion of food represent chemical changes.
Dissolving sugar in water
Boiling of water

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following represents a balanced chemical equation?

H2 + O2 -> 2H2O2
2H2 + O2 -> 2H2O
2H2 + O2 -> H2O2
H2 + O2 -> H2O

Tags

NGSS.MS-PS1-5

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you know that a chemical change has occurred?

A chemical change is indicated by a change in temperature only.
A chemical change has occurred if there are observable changes such as color change, gas production, or formation of a precipitate.
A chemical change can only be identified by smell.
A chemical change occurs when a substance is mixed with water.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you know that a physical change has occurred?

A physical change has occurred when there is a change in state or appearance without a change in chemical composition.
A physical change results in the formation of new substances.
A physical change can only be observed through chemical reactions.
A physical change involves a change in chemical composition.

Tags

NGSS.MS-PS1-4

5.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Which of the following represents a physical change?

Boiling water
Dissolving sugar in water
Freezing water
Melting ice cream

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

what is the definition of an unbalanced chemical equation?

An unbalanced chemical equation is a type of chemical reaction that occurs spontaneously.
An unbalanced chemical equation has equal numbers of atoms on both sides.
An unbalanced chemical equation is a representation of a reaction that only shows products.
An unbalanced chemical equation is a chemical equation that does not have equal numbers of each type of atom on both sides.

Tags

NGSS.MS-PS1-5

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Is the following statement true or false?

An example of a physical change is the tearing of paper.

false
true

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