How do you test for water BBC Bitesize?

How do you test for water BBC Bitesize?

The reaction between anhydrous copper(II) sulfate and water is used as a test for water. The white solid turns blue in the presence of water. A similar reversible reaction takes place between anhydrous cobalt(II) chloride (which is blue) and water to produce hydrated cobalt(II) chloride (which is pink).

How do you Sterilise water GCSE?

This is done in several ways.

1. Sedimentation – the water is stored in a large tank or a reservoir.
2. Filtration – the water is sprayed onto specially-prepared layers of sand and gravel.
3. Chlorination – chlorine gas is injected into the water to sterilise it.

What can be used to Sterilise water?

The methods used for sterilisation include chlorine, ozone and ultraviolet light.

How do you convert water from natural to pure water?

This is done in several ways:

1. Filtration – the water is sprayed onto specially-prepared layers of sand and gravel.
2. Sedimentation – a chemical is added which causes tiny solid particles (which would pass through a filter) to clump together into larger particles.

How do you test for water GCSE?

Pure copper(II) sulfate is white. It is also known as anhydrous copper(II) sulfate because it has no water in it. When water is present in a sample of copper(II) sulfate it turns blue.

Why is sea water not fit for drinking?

Why can’t people drink sea water? Seawater is toxic to humans because your body is unable to get rid of the salt that comes from seawater. Your body’s kidneys normally remove excess salt by producing urine, but the body needs freshwater to dilute the salt in your body for the kidneys to work properly.

How is seawater treated for potable water?

Sea water is heated until it boils. The salt remains in the liquid, and the steam is pure water. The steam is cooled and condensed to make potable water. Distillation requires a lot of energy to boil the water, and also to cool the steam down to condense it.

What are two main steps used to treat water from reservoirs?

Community Water Treatment

• Coagulation and Flocculation. Coagulation and flocculation are often the first steps in water treatment.
• Sedimentation. During sedimentation, floc settles to the bottom of the water supply, due to its weight.
• Filtration.
• Disinfection.

What are the four methods to purify water?

4 Methods to Purify Your Water

• 1 – Boiling. Boiling water is the cheapest and safest method of water purification.
• 2 – Filtration. Filtration is one of the effective ways of purifying water and when using the right multimedia filters it’s effective in ridding water of the compounds.
• 3 – Distillation.
• 4 – Chlorination.

How do you purify water for a school project?

Instructions

1. Cut off the bottom of an old plastic soda or juice bottle using scissors or a knife.
2. Place the bottle upside down into the vase or tall drinking glass.
3. Place cotton balls, cloth, or a coffee filter inside the bottle as the first layer.

What is the study of Chemistry in GCSE?

gcse Chemistry (Single Science) Chemistry is the study of the composition, behaviour and properties of matter, and of the elements of the Earth and its atmosphere.

What kind of science do you study on BBC Bitesize?

Chemistry is the study of the composition, behaviour and properties of matter, and of the elements of the Earth and its atmosphere. Exam board content from BBC Bitesize for students in England and Northern Ireland. Choose the exam specification that matches the one you study.

What do you study on GCSE combined science?

GCSE Combined Science Exam board content from BBC Bitesize for students in England and Northern Ireland. Choose the exam specification that matches the one you study. GCSE Physics (Single Science) Physics is the study of energy, forces, mechanics, waves, and the structure of atoms and the physical universe.