Elements Compounds And Mixtures Quiz For Grade 7th
14 Questions
| Total Attempts: 28269
(120).jpg "Elements Compounds And Mixtures Quiz For Grade 7th")
Prepare yourself to take this "Elements compounds and mixtures quiz for grade 7th. " We came to know the difference between a mixture, compound, and element in chemistry class. A compound is a substance made up of two or more elements, whereas an element is a substance that cannot be split into simpler substances. Test out how much you remember about the topic by taking up the test below. All the best!
Questions and Answers
- 1.An alloy is:
- A.
A compound
- B.
A solution of metals
- C.
A solution of gases
- 2.Na is the chemical symbol for:
- A.
Sodium
- B.
Tin
- C.
Nebraska
- 3.C is the chemical symbol for:
- A.
Calcium
- B.
Carbon
- C.
Chlorine
- 4.A mixture is two or more substances. It __________ be separated.
- A.
Can
- B.
Can not
- 5.Are mixtures chemically combined?
- A.
Yes
- B.
No
- 6.An Element is a simple, pure substance. It __________ be separated?
- A.
Can
- B.
Can not
- 7.A compound __________ be separated?
- A.
Can
- B.
Can not
- 8.Are compounds chemically combined?
- A.
Yes
- B.
No
- 9.Carbon Dioxide (CO2) is an ELEMENT?
- A.
True
- B.
False
- 10.Elements, compounds, and mixtures are pure substances.
- A.
True
- B.
False
- 11.Colloids are mixtures that will settle out.
- A.
True
- B.
False
- 12.The chemical symbol for Mercury is HG.
- A.
True
- B.
False
- 13.Check 4 ways to speed up dissolving:
- A.
Stirring
- B.
Boiling
- C.
Freezing
- D.
Heating
- E.
Filtering
- F.
Crushing
- G.
Burning
- H.
Nothing
- 14.What kind of reaction is it when the ice melts?
- A.
Endothermic
- B.
Exothermic
- C.
None of these
- D.
None of these
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