Flashcards
Everything
Cards in this deck (8)
- 1How do you calculate density?D=m/v
(Density equals mass divided by volume) - 2How do you make a solution?Solute (thing that dissolves)+Solvent (usually a liquid)=solution
- 3How do you make a suspension?Solid+liquid=suspension (cloudy and turbid)
- 4When is sieving used?Used when there are different sized particles in a mixture
- 5What is decanting?It is when the liquid above a suspension is carefully removed so that the sedimentation is left.
- 6What are the 6 steps of the separation process in drinking water (simplified)?1. Sedimentation of majority of the unwanted particles
2. Chemicals are added to make the unsettling particles larger so that they settle faster
3. The water then goes through a substance that helps remove even smaller particles, eg. sand
4. In unusual cases adsorption and oxidation (chemicals) it removes dissolved substances.
5. Lime and carbon dioxide is added.
6. Disinfection chemicals are added. - 7What are some characters of a living thing?-Movement
-Respiration, release of energy from food
-Responds to stimuli, detecting changes in the surroundings
-assimilation(growth and repair)
-Reproduction - 8—
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- Year 7 Science Flashcards on Everything, created by Alyssa W on 01/11/2016.
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- Alyssa W
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