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Edexcel | Physics 4PH0 | S 10 3 | Q2

S 10 3

2

(a)

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A student investigates a liquid X.

She adds some of the liquid to a container and then puts the container on a top-pan

electric balance.

S 10 3

2

(a) (I)

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1 Mark

Name the container.

Acceptable Answers

Extra Information

measuring cylinder

graduated cylinder

aps

dna

cylinder

measuring tube

beaker

measuring beaker

S 10 3

2

(a) (II)

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1 Mark

What is the volume, to the nearest

of liquid X?

Volume = ..............................

Acceptable Answers

Extra Information

dna 39

S 10 3

2

(a) (III)

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1 Mark

What is the reading, to the nearest gram, on the top-pan electric balance?

Reading = ................................. g

Acceptable Answers

Extra Information

56 (g)

dna 056 56.0 56.00

S 10 3

2

(b)

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Another student carries out a similar investigation but he uses liquid Y.

He records two results for volume and total mass.

He plots these results on a graph.

S 10 3

2

(b) (I)

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2 Mark s

Draw a straight line through the points.

Use the line to find the mass, in grams, of the empty container.

Mass of container = ................................... g

Acceptable Answers

Extra Information

straight line between both points

28(g)

must use ruler/straight

edge

dop

must be intercept of

graph

S 10 3

2

(b) (II)

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2 Mark s

In this investigation the density of liquid Y is given by the equation

density in

= slope of the graph

Use the graph to calculate the density of liquid Y.

................................................................................................................................

density = ...........................

Acceptable Answers

Extra Information

ignore size of triangle

exception

¾ = 0.75

S 10 3

2

(b) (III)

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3 Mark s

Explain the advantages of taking more than two results.

Acceptable Answers

Extra Information

any three (1) each

1. can plot more points

2. can draw line of best

fit/straight line rather

than curve

3. reason why two points is

unsatisfactory

4. extends the range

5. increases reliability

6. identifies anomalous

results

7. repeat or ignore anomalies

8. can see if density remains

constant

ignore

more accurate

can take average

ensures no anomalies

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