What is a soluble substance?
Substance which can dissolve in water
Temperature makes a solid dissolve faster. How does this happen?
The particles in matter are always moving. When we increase the temperature the heat adds energy and makes the particles move faster.
Evaporation is used to separate what mixtures?
Heterogeneous and homogeneous
What is a substance?
A substance is same or different molecules combined together chemically.
How are solutes classified based on the amount of solute? (Not the definitions)
Saturated, unsaturated, supersaturated.
What is matter?
Everything that occupies space and has a mass.
How can we make a solid dissolve faster?
Stirring, temperature and size
How can we classify solutions based on the solvent? (Not the definition)
Aqueous, Non-aqueous
What are the 3 ways we can separate mixtures?
Sieving, filtration, evaporation
What is a pure substance?
A substance which consists only of particles of that substance
3 examples of irreversible changes
Cooking, Fireworks, Burning a match etc.
What are the parts of the solotion?
Solute, solvent
Stirring makes a solid dissolve faster. How?
Stirring causes the particles of the solute to spread out into the spaces of the solvent more quickly.
What is used for the process of filtration
Filter paper
What mixtures does filtration separate?
Heterogeneous mixtures
