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S1Chemical Reactions

QuestionAnswer
State of matter with fixed shape and fixed volume Solid
State of matter with no fixed shape but fixed volume Liquid
State of matter with no fixed shape and no fixed volume Gas
Particle distance in a solid Close
Particle distance in a gas Far
Change from solid to liquid Melting
Change from liquid to gas Evaporating
Change from gas to liquid Condensing
Change from liquid to solid Freezing
What always forms in a chemical reaction A new substance
Are chemical reactions easy or difficult to reverse Difficult
One sign of a chemical reaction Temperature change
Another sign of a chemical reaction Colour change
Gas being produced indicates what A chemical reaction
Are physical changes easy or difficult to reverse Easy
Does a physical change form a new substance No
Effect of smaller particle size on reaction rate Faster reaction
Effect of higher concentration on reaction rate Faster reaction
Effect of higher temperature on reaction rate Faster reaction
Name of a substance that speeds up a reaction Catalyst
What is a biological catalyst called Enzyme
pH of a strong acid 1–2
pH of a weak acid 3–6
pH of a neutral substance 7
pH of a weak alkali 8–12
pH of a strong alkali 13–14
Products of acid + alkali Salt and water
Definition of soluble Able to dissolve
Definition of solute Solid that dissolves
Definition of solvent Liquid that dissolves a solute
Definition of solution Solute dissolved in a solvent
Definition of dilute Weak solution
Definition of concentrated Strong solution
Definition of saturated Cannot dissolve more solute
One way to increase dissolving rate Stirring
Filtration separates what Insoluble solids from liquids
Evaporation separates what Soluble solids from solutions
Distillation separates what Liquids with different boiling points
Chromatography separates what Dyes in ink
Flame test colour for sodium Orange
Flame test colour for copper Green
Created by: Mr Steel
 

 



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