Unit 3 IQWST

Unit 3 IQWST

7th Grade

25 Qs

quiz-placeholder

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Unit 3 IQWST

Unit 3 IQWST

Assessment

Quiz

Science

7th Grade

Hard

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

+1

Standards-aligned

Created by

Lisa Thompson

FREE Resource

25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which statement is always true about conservation of matter?

If a gas forms, the mass of a system decreases.

The mass of a system does not change during a chemical reaction.

If a solid forms, the mass of a system increases.

The mass of a system changes when a substance changes from liquid to gas, but it does not change in a chemical reaction.

Tags

NGSS.MS-PS1-5

2.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Media Image

Does this model represent a chemical reaction.

Choose all the answers that will create a CER.

This model shows a chemical reaction because all of the atoms are rearranged to form something new.

The model shows that 2 Mg plus 2 O formed a new substance could 2MgO.

Since, the product is different then the reactant, I know a chemical reaction occurred.

I know this is correct by looking at the model.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is a chemical reaction?

New atoms are formed when substances are mixed together

A solid material melts and becomes a liquid

Atoms of the reactants rearrange to form a new substance

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A student dissolves 3 gram of sugar in 10 grams of water. She then determines the mass of the solution. What is the mass of the dissolved sugar and water?

13 grams because the substance is a mixture and the molecules are floating next to each other.

13 grams because a chemical reaction occurred making a new substance.

Less then 13 grams because the water absorbed the sugar.

More than 13 grams because the sugar absorbed the water.

Tags

NGSS.MS-PS1-5

5.

HOTSPOT QUESTION

1 min • 1 pt

Select the subatomic particle that has a mass of 1 AMU.

Tags

NGSS.MS-PS1-1

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is true about the principle of the conservation of mass?

The mass of the products is never equal to the mass of the reactants.

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

The mass of the products is equal to the mass of the reactants.

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

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Jay had two clear liquids in bottles. The mass of one liquid was 10.0 grams and the other was 7.0 grams. When he mixed them, a yellow solid formed and settled to the bottom of the bottle. He predicted that the liquid plus the solid would have more mass, so he put the bottle on a scale. The mass was 17.0 grams. Why did the mass not change?

Because it is a mixture and mass doesn't change.

His scale is broken.

Do to the Law of conservation of mass, matter cannot be created nor destroyed so the mass is the same as the reactant and the product.

He forgot to tare his bottle and the scale had the mass of the bottle added in.

Tags

NGSS.MS-PS1-5

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