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Chemistry Techniques

Authored by Charles Martinez

Chemistry

10th Grade

NGSS covered

Chemistry Techniques
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8 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The diagrams show four pieces of laboratory equipment.

A

B

C

D

Tags

NGSS.HS-PS3-4

NGSS.HS-PS1-4

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

During an experiment a measurement is recorded in cm3 . Which apparatus is used?

balance

measuring cylinder

stopclock

thermometer

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

25 cm3 of an alkali are added to 20 cm3 of an acid. The temperature change is measured. Which apparatus is not needed in the experiment?

25 cm3 measuring cylinder

100 cm3 beaker

balance

thermometer

Tags

NGSS.HS-PS3-4

NGSS.HS-PS1-5

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A student put 25.0 cm3 of dilute hydrochloric acid into a conical flask. The student added 2.5 g of solid sodium carbonate and measured the change in temperature of the mixture. Which apparatus does the student need to use to obtain the most accurate results?

balance, measuring cylinder, thermometer

balance, pipette, stopwatch

balance, pipette, thermometer

burette, pipette, thermometer

Tags

NGSS.HS-PS3-4

NGSS.HS-PS1-5

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

A student mixes 25cm3 samples of dilute hydrochloric acid with different volumes of aqueous sodium hydroxide. In each case, the student measures the change in temperature to test if the reaction is exothermic. Which piece of apparatus is not needed?

A

B

C

D

Tags

NGSS.HS-PS3-4

NGSS.HS-PS1-5

NGSS.HS-PS1-4

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

A solid X is purified in five steps. The first four steps of the purification are shown in the diagram.

In step 5, how is a pure sample of solid X obtained from mixture Y?

dissolving

distillation

evaporating

filtering

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Solid R reacted with dilute sulfuric acid. The initial temperature of the dilute sulfuric acid and the final temperature of the solution are shown.

What was the change in temperature in °C?

– 6

– 4

6

4

Tags

NGSS.HS-PS3-4

NGSS.HS-PS1-5

NGSS.HS-PS1-4

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