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