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Mixt & Sol Part 2

Investigations 3 & 4

QuestionAnswer
What is a precipitate? solid material that forms after a chemical reaction
What is a chemical reaction? change that happens when two or more chemicals are mixed
What is calcium chloride? type of salt used to melt ice on the roads
What is citric acid? sour chemical that comes from citrus fruits
What is baking soda? common household chemical used in cooking
What is global warming? worldwide rise in temperatures
What is oxygen? second most abundant gas in the air
What is nitrogen? most abundant gas in the air
What is volume? amount of space something takes up
What is a diluted solution? solution which has a small amount of solute dissolved
What is a concentrated solution? solution which has a large amount of solute dissolved
What are some ways to separate mixtures? use a screen, paper filter or hand separation
What is the only way to separate a solution? let the solvent evaporate
How can you dilute a solution? add more water
What can you do to a saturated solution to dissolve more solute? heat up the solvent or add more solvent
What are some examples of chemical reactions? gas bubbles are created, a precipitate forms, and the temperature changes
How much dos 50 ml of water weigh? 50 g
How do you know when a solution forms? the solute dissolves and the liquid is clear
How do you know when a solution is saturated? no more solute will dissolve
Which is more concentrated? 1 scoop of salt and 100 ml of water OR 1 scoop of salt and 50 ml of water? The solution with 50 ml is more concentrated because they have the same amount of salt, but it has less space for the salt particles to spread out
Which solution is more saturated? 3 scoops of salt and 100 ml of water OR 2 scoops of salt and 100 ml of water? The solution with 3 scoops is more concentrated because they have the same amount of water, but it has more salt dissolved than the other solution
Created by: gsimon