Investigations 3 & 4
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is a precipitate? | solid material that forms after a chemical reaction
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| What is a chemical reaction? | change that happens when two or more chemicals are mixed
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| What is calcium chloride? | type of salt used to melt ice on the roads
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| What is citric acid? | sour chemical that comes from citrus fruits
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| What is baking soda? | common household chemical used in cooking
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| What is global warming? | worldwide rise in temperatures
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| What is oxygen? | second most abundant gas in the air
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| What is nitrogen? | most abundant gas in the air
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| What is volume? | amount of space something takes up
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| What is a diluted solution? | solution which has a small amount of solute dissolved
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| What is a concentrated solution? | solution which has a large amount of solute dissolved
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| What are some ways to separate mixtures? | use a screen, paper filter or hand separation
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| What is the only way to separate a solution? | let the solvent evaporate
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| How can you dilute a solution? | add more water
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| What can you do to a saturated solution to dissolve more solute? | heat up the solvent or add more solvent
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| What are some examples of chemical reactions? | gas bubbles are created, a precipitate forms, and the temperature changes
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| How much dos 50 ml of water weigh? | 50 g
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| How do you know when a solution forms? | the solute dissolves and the liquid is clear
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| How do you know when a solution is saturated? | no more solute will dissolve
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| 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
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| 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
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
gsimon
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