Chemistry: Properties and changes of materials
How do you know if something has dissolved?
When a solid doesn’t dissolve in water can you explain how you could separate from the water?
Can you explain what happens to the solid in a solution if the liquid is evaporated?
Can you list some factors could affect the speed at which different materials dissolve in water?
Can you explain how to separate a mixture of pebbles, sand and salt? What would you use?
Can you make a list of as many reversible changes as you can?
Can you explain how you know that a change is irreversible? What do you need to look out for?