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
Respond
all living things respond to stimuli or the environment
5 classes of vertebrates
- mammalia
- aves
- reptilia
- amphibia
- pisces
Kingdom Plantae
- nucleus
- multicellular
- cell wall
Non living
something that does not have or never had MR N GREWW characteristics
Binominal nomenclature
a 2 part scientific naming system, the 2 parts are the genus name and species name
Water
all living things need water in order to function
Crystallization
when a mixture of salt and water is heated, the water evaporates and leaves just the salt crystals.
Distillation
distillation collects the gas that evaporates from a mixture and cools it down to collect it as a liquid
Kingdom monera
unicellular
no cell wall
no nucleus
Classification
the process of classifying things into groups based on shared characteristics
pollination
the process in which a pollen cell (male) lands on the stigma (female)
vascular plants
plants that have tubes to carry water up and food down the plant They reproduce through seeds and pollen
Example of colloid
colloids are types of suspensions that don’t separate easily. Eg. hot chocolate in milk
Evaporation
when water is heated, it starts to evaporate and become a gas
Centrifuging
centrifuging separates light and heavy particles by spinning a mixture.
7 levels of classification
- Kingdom
- Phylum
- Class
- Order
- Family
- Genus
- Species
Nutrition
all living things need nutrients to survive
Invertebrates
animals that don’t have a backbone
Reproduce
the process by which living things make new life
Waste
living things get rid of waste by exhaling, urinating or sweating
Chromatography
when an absorbent peice of paper with different dyes on it is dipped in water, the most soluble dye moves to the top of the paper and the least soluble dye stays at the bottom of the paper
- top = most soluble
- bottom = least soluble
Kingdom fungi
- nucleus
- multi or unicellular
- cell wall
Kingdom Animalia
- nucleus
- multicellular
- no cell wall
Saturated
a solution in which no more solute can be dissolved
Vertebrates
animals that have a backbone
