9. What is one way to tell metals of the same size and color apart?

A. Weigh them for their density.

D. Use a vinegar solution to test their shine.

11. What is one way scientists are able to tell substances apart if they have similar densities?

A. Scientists test melting points or boiling points.

B. Scientists measure the surface area of the substances.

C. Scientists test the circumference of the individual atoms.

D. Scientists freeze the substance and study it after it cracks open.

12. Which of these statements is true of using melting and boiling points to identify a substance?

D. It is a property that does not change regardless of the amount of a substance you have.

A. It is an effective method to identify gas molecules.

B. It is the most affordable way to identify a substance.

C. It is a property that changes based on the amount of a substance you have.

13. Which of these statements is true of using a solubility test to identify substances?

D. It is a useful test to identify liquids that are soluble in other liquids.

A. It is a good test to identify jewelry.

B. It is only used for identifying liquids.

C. It is a good test to identify gas substances.

14. What would happen if you used a solubility test to identify silver by using nitric acid?

C. It would dissolve completely into the nitric acid.

A. There would be no chemical reaction.

B. It would change from a solid into a liquid state.

D. It would break into clumps and float to the surface of the nitric acid.

15. What would happen if you used a solubility test to identify flour by using water?

B. The flour would dissolve into the water.

C. The flour would become sticky and turn into dough.

D. The flour would change from a white to a brown.

16. How do scientists test for a substance’s flammability?

D. Scientists test how a small amount of a substance responds to high temperature.

A. Scientists expose substances to high temperatures, but not fire.

B. Scientists test how substances will respond to other non-flammable substances.

C. Scientists expose a substance to a heated metal rod to see how it will respond.

17. A burning splint test is a test that scientists use to

D. identify a substance by holding a burning splint next to the substance.

A. eliminate a flammable substance from an environment.

B. melt a substance to determine its identity by using a burning splint.

C. determine whether a gas will explode when exposed to heat from a burning splint.

19. Why do people mix gold with other metals?

B. The mixture helps the gold keep its shape.

A. The mixture makes more gold.

C. The mixture makes the gold more valuable.

D. The mixture makes the gold appear to be shinier.

20. What happens if you separate a mixture into all of its component pieces?

C. The remaining substances would be pure substances.

A. The remaining substances would dissolve.

B. The remaining substances would be pure alloys.

D. The remaining substances would become single molecules.

21. If a scientist took one large and one small sample of silver and used a melting point test, how would the samples respond?

A. They would both melt when their temperatures reach 960°C.

B. The small sample would melt at a lower temperature than the large sample.

C. The large sample would begin to melt before the small sample.

D. The small sample would evaporate because of its size, but the large sample would not.

TCI - UNIT 1 LESSON 3 - SUBSTANCES AND THEIR PROPERTIES

Authored by STEPHANIE GOLDRING

Science

4th - 8th Grade

NGSS covered

Used 52+ times

TCI - UNIT 1 LESSON 3 - SUBSTANCES AND THEIR PROPERTIES

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21 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

1. About how many atoms need to combine until you can see a substance?

A. hundreds of thousands

B. hundreds of millions

C. tens of billions

D. trillions of trillions

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

2. What is a substance?

A. any collection of molecules or atoms, no matter the size

B. matter that includes molecules that have at least four different elements

C. matter that has a constant chemical composition and characteristics

D. matter that has a changing chemical composition and various characteristics

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

3. What is another term for “substances” that is commonly used?

A. agents

B. chemicals

C. molecules

D. picos

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

4. Which of these is considered to be macroscopic?

A. one drop of water

B. two atoms of carbon

C. three molecules of water

D. ten atoms of oxygen

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

5. Mass is the

A. shape of a substance or molecule.

B. number of atoms or molecules in an object.

C. physical size of an object or sample of an object.

D. amount of matter in an object or sample of an object.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

6. What unit of measurement do scientists use to measure mass?

A. centimeters

B. kilograms

C. picometers

D. pounds

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

7. Which of these is NOT considered to be a property of a substance?

A. atom

B. mass

C. odor

D. shape

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TCI - UNIT 1 LESSON 3 - SUBSTANCES AND THEIR PROPERTIES

1. About how many atoms need to combine until you can see a substance?

2. What is a substance?

3. What is another term for “substances” that is commonly used?

4. Which of these is considered to be macroscopic?

5. Mass is the

6. What unit of measurement do scientists use to measure mass?

7. Which of these is NOT considered to be a property of a substance?

8. Which of these is a property that does NOT change for all objects of one substance?

9. What is one way to tell metals of the same size and color apart?

10. Density =

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