Chemical Change Flashcards
What are the:
1) Solute
2) Solvent
3) Solution
1) The material added to the solvent
2) The liquid that the solute is dissolved in
3) The resulting mixture of the solute and solvent
What are the names of the six possible phase changes?
Boiling Melting Freezing Condensation Sublimation Deposition
What are the seven main signs of a phase change?
1) A change in colour
2) A gas is given off (bubbling or effervescence)
3) Heat is given out, it gets hot
4) Heat is absorbed, it gets cold
5) Gives out light
6) New smells are noticed
7) A solid may form in the liquid (or gas)
What do many chemical reactions need to get them started?
Activation energy
What are the starting chemicals called in a chemical reaction?
Reactants
What are the new substances formed in a chemical reaction called?
Products
What is chemical decomposition?
Decomposition is the breaking down of a chemical compound into its elements or smaller compounds. Often this is done by heating the reactant.
What do acids taste like?
Sour
What is the order of reactivity for metals?
Potassium Sodium Calcium Magnesium Aluminium Zinc Iron Lead Copper Silver Gold
What is a base?
A base is the oxide or hydroxide of a metal.
What is an alkali?
An alkali is a base that is soluble in water.
What protein does the egg white of an egg contain?
Albumen.
What does yeast do to sugar with aerobic respiration?
It makes carbon dioxide and water.
What does yeast do with sugar when there is anaerobic respiration (fermentation)?
It produces alcohol and carbon dioxide.
What is group 2 of the periodic table?
The alkaline earth metals
