GAUTENG DEPARTMENT OF EDUCATION SENIOR SECONDARY INTERVENTION PROGRAMME PHYSICAL SCIENCE
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LEARNER NOTES)
Question 4: 5 minutos
Ola a common mistake to interpret the dor as a multiply function. This is the water
that is trapped in the crystal during crystalisation and must be ADDED to the mass of
the lonic compound)
Calculate the percentage water of crystallisation in CuSO. SHO
Calculate the concentration of a 250 ml solution of sodium hydroxide i 10 g of the
soluto is dissolved
(8)
42
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Astudent is performing an experiment comparing sound and light waves. the student gathers the following data. what conclusion does the student most likely make based on this data? light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. all sound waves always have the same energy, so the temperature of the medium does not affect wave speed. light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.

If a simple machine reduces the strength of a force, what must be increased?

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass