WorksheetsSeparating mixtures, chemical reactions
Total questions: 15
Worksheet time: 8mins
What types of mixtures exist?
Homogeneous and Heterogeneous
Pure and partial
Homogeneous and pure
How are mixtures separated ?
Mixtures can be separated by heating the components
Mixtures can be separated by filtration evaporation distillation decantation
Mixtures can be separated into their original components using techniques
Mixtures can be separated by magic
Irreversible changes are...
permanent and cannot be reversed
are temporary and can be reversed
How do you separate salt and water?
Decantation
Filtration
Evaporation
Sieving
What object do we need to separate metals from other components?
Filtre
Magnetic separation
Water
Magnet
There are 3 chemical reactions:
Combustion, oxidation and preparation
Conduction, oxidation and fermenzation
Combustion, oxidation and fermentation
Conduction, convection and fermentation.
What`s oxidation ?
Oxidation can appear in mobile phones
Oxidation is a chemical reaction in which some metals and food are exposed to air
Oxidation doesn’t exist
Identify if it is Heterogeneous or Homogeneous: Milk and cereals
Heterogeneous
Homogeneous
Combustion is a chemical reaction that produces energy in form of light and heat.
True
False
How do you separate sugar and water?
Decantation
Distillation
Filtration
Evaporation
Identify if it is Heterogeneous or Homogeneous: pizza
Heterogeneous
Homogeneous
Identify if it is Heterogeneous or Homogeneous: smoothie
Heterogeneous
Homogeneous
Identify if it is Heterogeneous or Homogeneous: coffee
Heterogeneous
Homogeneous
What is fermentation?
It is a chemical reaction caused by fire
It is a chemical reaction caused by fungi and bacteria
It is a chemical reaction caused by exposure to the air
Separating mixtures: How do you separate oil and water?
(a)
