Classification Flashcards
Sediment
when one of the substances settles to the bottom due to gravity
Emulsifiers
emulsifiers can be added to ensure mixtures remain completely mixed
Suspension, give an example
a suspension is a mixture of a solid and a liquid. The solid is undissolved. e.g dirt in water and sand in water
Solution, give an example
a solution is a mixture of one substance dissolved evenly in another substance. Eg. salt in water
Dilute
if there’s a small amount of solute dissolved in a substance it is dilute
Soluble substances, give examples
substances that dissolve in water. e.g salt, powerade powder, coffee
Insoluble substances, give examples
substances that are able to dissolve in other substances. e.g pepper, oil, sand
Who invented Linnaean taxonomy and when?
Carolus Linnaeus in the 18th century
Dichotomous key
in each step 2 choices are given, each choice leads to another choice or to the identity of the living thing.
what is filtration and give Examples
filtration is the process of using a filter which permits the fluid to pass through but retains the solid particles.
- separating pasta from boiling water with a sieve
- tea bags in hot water
- a drain separating water from rubbish
Non vascular plants
do not have tubes to carry water up and food down the plant. The reproduce through producing spores
Photosynthesis
when plants use sunlight to produce their own energy
Flocculants
can be added to a mixture to make suspended particles clump together. Makes them heavy enough to settle to bottom
Kingdom protista
- nucleus
- can be multi and unicellular
- can have cell walls
Exchange gas
living things have organs that allow them to exchange oxygen and other gases
Growth
all living things grow during their lives
