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Laabri

Year 7 practice questions 1

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Last updated about 1 year ago
24 Nsɛmmisa
4
9
1
1
3
1
1
1
1
1
1
3
1
4
1
1
1
1
1
1
1
4
4
5
Asemmisa {{asɛmmisaAhyɛnsode}}
1.

https://www.focuselearning.co.uk/s/1j5xuigz2riy

Which sample is pure

Which sample is a mixture

Which dye colour is most soluble

Which dye colour is least soluble

Mmuae Afoforo a Wobɛpaw:
A
purple
yellow
B
blue
Asemmisa {{asɛmmisaAhyɛnsode}}
2.

https://www.focuselearning.co.uk/s/1j5xuigz2riy

Use the simulation to work out the Rf values for the three dyes.

(Note that the water moves to 7.0cm).

Rf = distance moved by sample / distance moved by solvent

Rf Yellow = /

Rf value =

Rf purple = /

Rf purple =

Rf blue = /

Rf Blue =

Mmuae Afoforo a Wobɛpaw:
0.87
0.50
3.5
6.1
2.7
0.39
7
Asemmisa {{asɛmmisaAhyɛnsode}}
3.

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4.

Asemmisa {{asɛmmisaAhyɛnsode}}
5.

How many types of atom are there

How many atoms are there in total

This is a

Mmuae Afoforo a Wobɛpaw:
9
element
compound
mixture
3
Asemmisa {{asɛmmisaAhyɛnsode}}
6.

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7.

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8.

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9.

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10.

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11.

Asemmisa {{asɛmmisaAhyɛnsode}}
12.

A) is a(n)

B) is a(n)

C) is a(n)

Mmuae Afoforo a Wobɛpaw:
mixture
element
compound
Asemmisa {{asɛmmisaAhyɛnsode}}
13.

Asemmisa {{asɛmmisaAhyɛnsode}}
14.

Properties of solids liquids and gases

Mmuae Afoforo a Wobɛpaw:
4
1
2
3
Asemmisa {{asɛmmisaAhyɛnsode}}
15.

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16.

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17.

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18.

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19.

Which diagram shows elements combining to make a compound?

Asemmisa {{asɛmmisaAhyɛnsode}}
20.

C2H5OH

Asemmisa {{asɛmmisaAhyɛnsode}}
21.

Asemmisa {{asɛmmisaAhyɛnsode}}
22.

  • S

  • P

  • R

  • Q

  • Monatomic element

  • diatomic compound

  • mixture of monatomic elements

  • diatomic element

Asemmisa {{asɛmmisaAhyɛnsode}}
23.

Mmuae Afoforo a Wobɛpaw:
Simple distillation
Filtration
Chromatography
Fractional distillation
Asemmisa {{asɛmmisaAhyɛnsode}}
24.

Independent variable =

Dependent variable =

A possible control variables =

What would be plotted on the x-axis = (s).

What would be piloted on the y-axis = (°C)

Mmuae Afoforo a Wobɛpaw:
temperature
how much stirrring
time