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Vocabulary
States of matter
Experiments
Logic questions
100
What is a mixture?
a mix of two or more substances
100
What are the three states of matter?
solids, liquid, and gas
100
What is more soluble? Epsom salt or regular salt? Why?
Epsom salt: more epsom can be dissolved in the water before it reaches saturation than regular salt.
100
Salt crystals formed ______shape and had a ________(letter).
square shape and X
200
What is a solution?
It is a type of mixture. When a solid and a liquid are mixed, the solid dissolves.
200
Explain how water can go through all three states of matter.
freeze water and it becomes ice. Melt the ice and it become liquid. Leave the water for evaporation and it will become a gas.
200
Explain how you would separate sugar from the solution.
Evaporation
200
Would you say sugar water is a mixture or/and solution? Why?
Solution because the sugar dissolves in the water.
300
What is a solvent? give an example
Is a liquid. Example: water
300
How are liquid and solids the same and different? (give a reason for each)
Similar: made up of mass and takes up space Different: liquid does not have a definite shape
300
All salts have the same solubility. True or False. Explain why.
It is true that all salts can dissolve in water. However, different salts have various saturation rates. Think of Epsom salt and regular salt.
300
Jane believes that Epsom salt and table salt will have the same solubility, so she puts the same amount thinking it will dissolve at the same rate. What would you tell Jane?
Different salts have various solubility levels. The epsom salt will be able to dissolve more than table salt.
400
What is a solute?
It is a solid. Example: salt and sugar
400
How are gas and liquid similar?
they both take up space, have mass, and do not have a definite shape.
400
Mixture: Pebbles, sand, salt, and water. How can you separate each substance in the mixture? Hint: Think about our experiments (what materials did we use)
1. Pebble can separated by a screen 2. Sand can be separated by the filter. 3. Salt can be separated by evaporation.
400
How would you separate a mixture of marbles, corks, and nails?
Marbles: screen Nails: magnet Corks-water
500
What is solubility?
How much a substance can dissolve in the liquid. Remember: It is not about a fast a substance dissolves but how much the substance can dissolve in the solvent before it reaches saturation.
500
How is gas different from liquids and solids?
Gas does not have volume.
500
A the method of evaporation to separate a salt/water solution, what will you see remain on the petri dish?
salt crystals
500
How can you make a supersaturated Epsom salt solution?
By heating the solution, so more Epsom salt can dissolve.