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KS3 Chemistry

Chemistry suited for KS3 Students


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KS3 Chemistry


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Michael Sinclair


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[Front]


How can pressure affect a change of state?
[Back]


The higher the pressure on a substance, the higher the temperature required to change from a liquid to a gas.

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188 questions
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How can pressure affect a change of state?
The higher the pressure on a substance, the higher the temperature required to change from a liquid to a gas.
What formula is shown?
Carbon di oxide
What knowledge did Dalton not have at the time of creating his model?
That atoms are composed of protons, neutrons and electrons.
Which statement is true of an atom?
Once thought of as the smallest building blocks of matter.
Which statement is true of an element?
All parts of these substances must have the same number of protons.
Which statement is true of an compound?
Each of these has a name that is one or more words long.
What does this image show?
A mixture of compounds
Which arrangement does this image show?
A mixture of elements and compounds
Describe the following image.
A mixture of elements
Which situation illustrates the quickest example of diffusion?
Opening a packet of coffee and letting the smell out
Which of the following is a method of separating a mixture through filtration?
Separating a solid and a liquid by passing a mixture through a series of smaller and smaller openings; the liquid will pass through the holes and the solid will not.
Which of the following is a method of separating a mixture through evaporation?
Heating a solution until it becomes a gas, leaving behind the previously dissolved solid.
Which of the following is a method of separating a mixture through distillation?
Heating a liquid until it becomes a gas, then trapping and cooling the gas, leaving behind a separate solid and liquid.
Which of the following is a method of separating a mixture through chromatography?
Placing a substance on filter paper, putting the paper in a solvent and watching to see how, and how quickly, the substance and solvent reacts.
Which statement is a fact about chemical reactions?
Chemical reactions result in a new arrangement of atoms.
Choose the definition for a catalyst, in a chemical reaction.
A substance that speeds up the rate of a chemical reaction