Chemistry Techniques
Authored by Charles Martinez
Chemistry
10th Grade
NGSS covered
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8 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
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
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
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
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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