grade 7 science unit 1
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 matter? | anything that takes up space and has mass
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| what is matter made up of? | matter is made up of tiny, vibrating particles
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| what are the 5 main points of the particle theory? | all matter is made up of tiny particles that:
have empty spaces between them
are always moving(vibrating)
move faster and spread farther apart when heated
particles attract each other
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| what is a mechanical mixture? | a mixture with diffrent parts that you can see since the particles are divided unevenly
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| what is a solution? | a mixture that looks like a single pure substance, but is a uniform mixture of 2 or more pure substances since the particles are divided evenly
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| what is a solute? | the part of the solution that dissolves into a solvent
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| what is a solvent? | the part of a solution into which the solute(s) dissolve
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| what is concentration? | a solution with a large number of solute particles in a given volume of solution
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| what is solubility? | is a measure of how much solute can dissolve into a certain solvent to form a saturated solution
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| what makes a substance pure? | a pure substance has only one kind of particle
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| what does dissolve mean? | to mix one type of matter into another type of matter to form a solution
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| what is the universal solvent? why is it known as the universal solvent? | water becuase dissolves more solutes than any other solvent
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| what does dilute mean? | a dilute solution is a solution with a small amount of solute particles
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| what is the formula for concentration? | mass of solute(grams)/ 100mL of solution
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| what is the formula for solubility? | maximum amount of solute dissolved/ 100mL of solvent
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| what is the sequence to figure out concentration or solubility? | GRASS (given, required, analysis, solution, statement)
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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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