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Year 7 practice questions 1

Last updated 5 months ago
24 questions
4
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 ___________
Other Answer Choices:
A
purple
yellow
B
blue
9
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 = _________
Other Answer Choices:
0.87
0.50
3.5
6.1
2.7
0.39
7
1

1

3
How many types of atom are there ______
How many atoms are there in total ______
This is a _____________
Other Answer Choices:
9
element
compound
mixture
3
1

1

1

1

1

1

3
A) is a(n) _____________
B) is a(n) ____________
C) is a(n) ____________
Other Answer Choices:
mixture
element
compound
1

4
Properties of solids liquids and gases
Other Answer Choices:
4
1
2
3
1

1

1

1

1

Which diagram shows elements combining to make a compound?

1

C2H5OH

1

4

  • P
  • R
  • S
  • Q
  • Monatomic element
  • diatomic compound
  • mixture of monatomic elements
  • diatomic element
4


Other Answer Choices:
Simple distillation
Filtration
Chromatography
Fractional distillation
5
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)
Other Answer Choices:
temperature
how much stirrring
time