Mid-Year 8
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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| How do we write what is happening in a chemical reaction? | Chemical equation
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| What is a physical change? Provide an example. | A change in a substance that does not change its identity (boiling water)
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| Is boiling point a physical property? | Yes
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| What is a chemical change? Example. | Change in which one or more substances combine or break apart to form new substances (rusted bike)
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| What is a pure substance? Example. | A single kind of matter that has a specific makeup and set of properties (oxygen)
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| What is an element? | A pure substance that cannot be broken down into other substances by chemical or physical means
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| Define weight. | Measure of the force of gravity on you.
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| Define mass. | Measurement of the amount of matter in the object.
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| Define density. Formula? | Mass of a material in a given volume. m/v
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| Solve for density: 100g of mass with a volume of 50cm3 | Density= 2cm3
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| Define an atom. | The basic particle from which all elements are made.
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| Are atoms of different elements the same? | No
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| How would you find the volume of an irregular shaped object? | water displacement
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| What is used to measure the volume of a liquid? | Graduated cylinder
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| Define matter. | Anything that has mass and takes up space.
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| Mixture v.s. Compound | Mixture: made of at least 2 substances that are together but not chemically combined
Compound: pure substance made of at least 2 elements chemically combined
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| Example of mixture | Soil
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| What can you predict from an element's location in the periodic table? | If it's a metal, metalloid or nonmetal and its properties
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| Describe metal elements. | Hard, good conductor of heat
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| Which group of elements contains the most elements? | Metals
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| More than half of the nonmetals at room temperature are what state of matter? | Gas
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| Define ductile. | Drawn into a wire
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| The number of protons as equals the number of what? | electrons
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| Define atomic number. | number of protons in an atom
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| Which particle of an atom is outside of the nucleus? | Electon
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| Define metalloids. | Semiconductors (in between metals and nonmetals)
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| Define a solid, liquid, and gas. | Solid: definite shape and volume
Liquid: definite volume, no definite shape
Gas: no definite shape or volume
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| Define Charles's Law. | A principle that describes the relationship between temperature and volume of a gas at a constant pressure
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| Define sublimation. | change in a state from solid directly to gas
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| Define surface tension. | the result of an inward pulling among the molecules of a liquid that brings the molecules closer together; causes the surface to act as if it has thin skin
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| What is it called when a substance changes from a liquid to a solid? | Freezing
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| The freezing point of water is the same as its_____ point. | Melting
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| Define vaporization. | Change in state from a liquid to gas.
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| Define condensation. | Change in state from gas to liquid
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| The opposite of vaporization is what? | Condensation
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| Define a fluid. | Any substance that can flow
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| The amount of space an object takes up is called its what? | Mass
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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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