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23 Cards in this Set
- Front
- Back
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Hypothesis |
An educated guess based on our knowledge already.
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Aim |
The purpose of the experiment (often begins with he word 'To') |
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Observation Experiment |
Observe. Watching something happen or observing an object or thing ( e.g.. cell) 'To observe' |
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True Experiment |
Investigate. Investigating what the results/effect is. Doing the experiment. 'To investigate' |
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Demonstration Experiment |
Demonstrate. Demonstrating how something works. 'To demostrate' |
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Independent Variable |
The thing we change on purpose. (only 1 independent variable) (change as many times as time permits, the more the better.) (at least 5 times) |
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Dependent Variable |
The thing that changes because of the independent variable has changed or the thing you will measure (e.g. time or temperature). |
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Controlled Variables |
The thing/s we keep the same,
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Uncontrolled Variables |
Thing/s that we cannot control. (e.g wind). However still try and control it. ( e.g. do experiment inside if possible). |
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Hypothesis for true experiment |
As something happens to the independent variable something happens to the dependent variable. |
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Materials |
- list - in columns and rows. - once you have done five rows stop and continue on beside it. - not dot points - tell the reader how much of and the size of the equipment used. ( if it is appropriate). (e.g. 250mL of water) |
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Method |
- written in a step like manner (e.g. 1 ________, 2 ____ etc.) - written in past tense, third person and passive voice. ( e.g. present- place water in beaker. past- placed water in beaker) - third person- no reference to a person. (e.g. she, I he, they....etc.) - passive voice- the water was placed in the beaker. subject: water verb: placed
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Tables |
- independent variable on the left-hand side - dependent variable on the right. - until go in the top of a column in brackets, not in each box
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Kinetic Theory |
Kinetic- movement Definition of Matter: Matter is anything that occupies a volume and has space. Kinetic Theory- states that matter is made up of tiny particles that are in constant, random, motion. |
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Solid |
Made up of tightly packed together particles which vibrate but cannot move freely. |
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Liquid |
Made up of particles which can move freely but not completely freely. |
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Gas
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Made up of less particles and the particles in a gas move very fast. They move freely. |
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Melting |
A process whereby a solid changes into a liquid. Adding more heat gives the particles more energy which causes them to break away from the attraction of all the particles around them and become a liquid. |
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Attraction |
A force mutually drawing the particles closer together. |
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Solids- Attraction |
Strong Attraction |
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Liquids- Attraction |
Weak attraction |
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Gas- Attraction |
No attraction |
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Melting Point |
It is the temperature at which a solid changes into a liquid. e.g. melting point of ice.water ( scientific name for ice) is 0 degrees celsius, however for dry ice ( Sodium Chloride (salt)) it is 36 degrees Celsius)
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