Consider substances found occuring naturally in the environment and synthetic substances created by humans in laboratories and select ALL that occur in both places.

Can be a product of a chemical reaction

Select each choice that is a phenomenon that is a chemical reaction. There is more then one correct answer.

White sugar turns black when heated over a fire.

The surface of a penny changes color after many years.

A substance evaporates from a bubbling pot on the hot stove.

Melted butter becomes a solid when placed in the refrigerator.

A white substance is left behind after water evaporates from a solution

How does the image show that mass is conserved during a chemical reaction? (Mark the one best answer)

The same number of atoms of each element is on both sides of the equation.

The products have different atoms from the reactants.

The same number of compounds appears on both sides of the equation.

The same elements appear on both sides of the equation.

Why are chemical equations always balanced? Select ALL that apply.

Matter can only be rearranged/conserved.

Is this chemical equation balanced? Why or why not? Choose the BEST answer.

No, none of the elements (carbon, hydrogen, or oxygen) are the same amount on both the reactant and product side.

Yes, the amount of atoms for each element are equal on both the reactant and product side.

No, the carbons are not the same number on both the reactant and product side.

No, neither the carbons or hydrogens are the same amount on both the reactant and product side.

Chemical Interactions I-check 9

Quiz

•

Science

•

7th - 8th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-PS1-1, MS-PS1-5, MS-PS1-2

+1

Standards-aligned

Nate Ziemer

Used 208+ times

FREE Resource

25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens in a chemical reaction?

Atoms from the reactants rearrange and form new substances

Atoms from the products rearrange and form new reactants

New atoms appear in the reactants

Atoms from the reactants dissappear

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A scientist prepared a closed container for a chemical reaction. She poured two liquids into the bottle and quickly closed the bottle with the balloon stopper. The mixture bubbled and the balloon began to inflate. Explain why the balloon inflated.

New substances formed particles that are bigger than the ones before.

The liquids reacted together and created more matter

A new gas was created and the gas took up more space

The scientist did not seal the system fast enough and more air got in.

Tags

NGSS.MS-PS1-2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Look at the image: The different-shaded circles represent different kinds of atoms. When circles are touching, they indicate that those atoms make up one molecule. Which of them represents a possible chemical reaction?

Reaction A

Reaction B

Reaction C

Reaction D

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the chemical equation for the molecule in the image.

O₃₄

ZnClOH

ZCOH

C₈H₁₆OZN

Tags

NGSS.MS-PS1-1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many atoms are in this formula in the picture?

1

2

3

4

Tags

NGSS.MS-PS1-1

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many elements are in the formula in the image?

1

2

3

4

Tags

NGSS.MS-PS1-1

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the Chemical Formula for the image?

ZNCOH

ZnClOH

C₂H₆O

C₁₂H₆O₄

Tags

NGSS.MS-PS1-1

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Chemical Interactions I-check 9

25 questions

What happens in a chemical reaction?

A scientist prepared a closed container for a chemical reaction. She poured two liquids into the bottle and quickly closed the bottle with the balloon stopper. The mixture bubbled and the balloon began to inflate. Explain why the balloon inflated.

Look at the image: The different-shaded circles represent different kinds of atoms. When circles are touching, they indicate that those atoms make up one molecule. Which of them represents a possible chemical reaction?

What is the chemical equation for the molecule in the image.

How many atoms are in this formula in the picture?

How many elements are in the formula in the image?

What is the Chemical Formula for the image?

How many atoms are in the fomula in the image?

How many elements are in the formula in the image?

Consider substances found occuring naturally in the environment and synthetic substances created by humans in laboratories and select ALL that occur in both places.

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