Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
70 Cards in this Set
- Front
- Back
What does a physicist do?
|
They explain things like movement, heat and light. They study physics.
|
|
What does a chemist do?
|
They study how substances react with each other.
|
|
What does a biologist do?
|
They specialize in the study of living things.
|
|
What does an astronomer do?
|
They study our solar system as well as stars and other galaxies.
|
|
What does an earth scientist do?
|
They study our earths characteristics. Eg. How mountains form.
|
|
What is a conical flask used for?
|
To hold chemicals.
|
|
What is an evaporating dish used for?
|
To evaporate excess solvents.
|
|
What is a filter funnel used for
|
It is used with filter paper to filter substances.
|
|
What is a measuring cylinder used for?
|
To measure to volume of substances accurately.
|
|
What is a beaker used for?
|
A container used for mixing and/or heating liquids and other substances.
|
|
What are tongs used for?
|
To hold small items whilst being heated.
|
|
What is a test tube used for?
|
A container for heating, holding or mixing small substances.
|
|
What is a stirring rod used for?
|
Used to stir mixtures.
|
|
What is a clamp used for?
|
It holds the required height of the retort stand.
|
|
What is a bosshead used for?
|
It holds the clamp to the retort stand.
|
|
What is the retort stand used for?
|
It is used with a clamp and bosshead to hold equipment at the required height.
|
|
What is a test tube holder used for
|
To hold the test tube whilst being heated.
|
|
What is a test tube rack used for.
|
It is used to hold the test tube upright.
|
|
What is a gauze mat used for?
|
To support a container over a bunzen burner.
|
|
What is a tripod used for ?
|
It supports a gauze mat over the bunzen burner. It is used to hold things over the bunzen burner.
|
|
What is a spatula used for?
|
It is used to pick up small amounts of solid substances.
|
|
What is a bunzen burner used for?
|
It is used to heat substances.
|
|
What are the parts of a bunzen burner?
|
(Top to bottom) Barrel, collar, air hole, gas hose, base.
|
|
Which is hotter blue of orange flame?
|
The blue flame is much hotter than the orange flame as it is used for heating substances, whilst the orange flame is the "safety flame"
|
|
What does a nuclear physicist study?
|
They study the behavior of the particles in an atom.
|
|
What does a botanist study?
|
They study aspects of plant growth.
|
|
What is a mixture?
|
A combination of two or more different substances whose basic components remain the unchanged.
|
|
What is a pure substance?
|
A pure substance is the only substance that is not a mixture. It is pure.
|
|
What is an impure substance?
|
A mixture; something that has more than one component.
|
|
What is a solvent?
|
A substance, usually a liquid, capable of dissolving another substance.
|
|
What is a solute?
|
A substance dissolved in another substance.
|
|
What is a solution?
|
The mixture that forms when a solute dissolves in a solvent.
|
|
What does soluble mean?
|
It is able to be dissolved.
|
|
What does insoluble mean?
|
That is is not able to dissolve.
|
|
What is the insoluble material passed though a filter?
|
The residue (it is the stuff not filtered though, usually a solid)
|
|
What is the soluble material passed through a filter?
|
The filtrate. The substance, usually liquid, that passes though the filter.
|
|
What is distillation?
|
It is where you purify a liquid by heating and cooling it.
|
|
What is Unicellular?
|
Something with one (uni) cell.
|
|
What is multi cellular?
|
something with multiple (multi) cells.
|
|
True or false: humans are made of over 100 trillion cells.
|
True. This is because cells multiply.
|
|
What are the 3 basic components of the cell theory?
|
All organisms are composed or one ore more cell. The cell is the basic unit of life and all living things. All cells are produced by the division of pre-existing cells.
|
|
What are the parts of a microscope?
|
(Top to bottom) Eyepiece lens, rotating knob, objective lens, stage, coarse focus, fine focus, light, base.
|
|
What is respiration?
|
The process in living organisms producing energy (breathing).
|
|
What is the respiration equation?
|
Glucose + oxygen -> carbon dioxide + water + energy
|
|
What is photosynthesis?
|
The process in which plants use sunlight to produce essential nutrient from water an carbon dioxide.
|
|
True or false: plants make their own glucose.
|
True, plant cells contain chloroplasts where photosynthesis occurs.
|
|
What part of the plant does respiration occur?
|
The mitochondria.
|
|
What is the cell membrane?
|
It allows substances to pass in and out of the cell.
|
|
What is the cytoplasm of a cell?
|
It supports the cell parts in a jelly-like material.
|
|
What is the nucleus in a cell?
|
It directs cell activities.
|
|
What is the ribsom in a cell?
|
It makes protein.
|
|
What is the mitochondria of a cell?
|
It produces energy through chemical reactions.
|
|
What is the chloroplast of a cell?
|
Only found in plant cells. It uses light to create sugar
|
|
What is the vacuole in a cell?
|
The storage and waste removal.
|
|
What is The cell wall?
|
Plant cells only. Supports and protects the cell.
|
|
Put these words in ascending order: system, organ, cell, tissue.
|
Cell, tissue, organ, system.
|
|
What is a dichotomous key?
|
A key that allows us to identify items in the natural world.
|
|
What is a key?
|
A chart or object used to determine and identify living things and objects.
|
|
What is a solid?
|
A solid is the state of mater which keeps its shape. Unlike gases or liquids, a solid only vibrates slightly.
|
|
What is a Liquid?
|
The state of mater where the particles are close together but are still able to move around.
|
|
What is a gas?
|
The state of matter where the particles move around freely and fill up the space they are in.
|
|
True or false: Solid objects do not expand when they are being heated.
|
False. Solid object expand when they are hot.
|
|
Why do solid objects expand whilst they are hot?
|
Because the atoms in solid objects are closely packed together. When they are heated they vibrate more and take up more space.
|
|
What are the 2 main effects of heat?
|
expansion and contraction.
|
|
What is expansion in matter?
|
It is when the matter gets hot it expands because the particles are moving faster.
|
|
What is contraction in matter?
|
It occurs when the matter is cooled, it becomes smaller.
|
|
What is a physical change?
|
A change which can be reversed.
|
|
What is a chemical change?
|
A change that can not be reversed. a chemical change may look like it was a physical change, but if you can't change it back it is a chemical change.
|
|
What are the signs of a chemical change?
|
- A new substance is formed
- A temperature change may occur - A change in colour - Bubbles of Gas my appear - Light or heat may appear |
|
What is density?
|
The amount of space that the particles, people or objects are given. A crowded space will be dense, an empty room is less dense.
|