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Biblioteka

Year 8 quiz (25) (some Year 7 material)

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Posljednje ažuriranje about 1 year ago
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Pitanje 1
1.
Drugi mogući odgovor:
Mixture of elements and compounds
Mixture of elements
Mixture of compounds
Pitanje 2
2.

Drag the correct labels

Drugi mogući odgovor:
Independent variable
Control variable
Dependent variable
Pitanje 3
3.

As the difference in reactivity the temperature change will

Drugi mogući odgovor:
increases
decreases
Pitanje 4
4.

Click the dimples where a displacement reaction would occur and so the temperature would increase.

Pitanje 5
5.

A student was investigating the reaction of lithium and water. She added a few drops of universal indicator to water in a trough and added a piece of lithium. The water turns blue as

is an alkali and universal indicator tuns in alkaline solutions. Soluble metals oxides / hydroxides make solutions

Drugi mogući odgovor:
blue
alkaline
Sodium hydroxide
Pitanje 6
6.

Gas tests

Confirmation of carbon dioxide

Confirmation of hydrogen

Confirmation of oxygen

Drugi mogući odgovor:
Gas explodes with a pop
lime water turns cloudy
A lit splint relights
Pitanje 7
7.

Match the word to the correct category

  • Granite

  • marble

  • sandstone

  • Solidified magma

  • Formed by high heat and or pressure

  • layers of sediment

  • Igneous

  • Sedimentary

  • Metamorphic

Pitanje 8
8.

Complete the equations

Drugi mogući odgovor:
sodium nitrate
+ hydrogen
Barium chloride
potassium sulfate
Lead nitrate
+ water
Iron (II) chloride
Zinc chloride
+ water + carbon dioxide
sodium sulfate
iron nitrate
Pitanje 9
9.
Drugi mogući odgovor:
water condenses
Fuel
Carbon dioxide makes lime water go cloudy
Pitanje 10
10.

The calcium carbonate solid gets

is observed

Drugi mogući odgovor:
larger
evaporation
fizzing
smaller
Pitanje 11
11.

The mass of carbon dioxide gas produced

Drugi mogući odgovor:
1.6g