Skip to content

Course home

Solids, liquids and gases

Solids, liquids and gases

EasyMedium
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687
Question 42

A researcher measures the density of a sample of brackish water collected from an estuary.

She uses a graduated cylinder and a digital mass balance.

a.

State the equation linking density, mass, and volume.

[1]
b.

Which of the following is a correct SI unit for density?

  • A kg/m\text{kg}/\text{m}kg/m
  • B kg/m2\text{kg}/\text{m}^2kg/m2
  • C kg/m3\text{kg}/\text{m}^3kg/m3
  • D g/m2\text{g}/\text{m}^2g/m2
[1]
c.

Complete the table to show what is measured by a digital mass balance.

Measuring instrumentQuantity measured
graduated cylindervolume
digital mass balance[Answer Here]
[1]
d.

Describe how the researcher should use each instrument to make her measurements as accurate as possible.

  • Graduated cylinder
  • Digital mass balance
[2]
e.

The researcher wants to ensure her experiment is a fair test when comparing water samples from different locations.

State one factor about the environmental conditions that she should keep the same throughout her experiment.

[1]
f.

Why is it important that she keeps this factor constant?

[1]
Markscheme

Solids, liquids and gases Questions

  1. IGCSE
  2. /Physics
  3. /Solids, liquids and gases

Question bank