help study for chemistry test
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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| shape, color, and texture are examples of | physical properties
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| when energy is taken in or given off a__________has occurred | chemical change
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| metal rusting is an example of a | chemical change
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| _______measures how much mass is in a given volume | density
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| temperature at which a SOLID turns into a LIQUID | melting point
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| temperature at which a LIQUID turns into a GAS | boiling point
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| in a chemical equation what is often put in front of an element or compound? | a coefficient
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| a formula that uses symbols to show what happens in a chemical reaction | equation
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| total mass is the same is the same befir abd after a physical or chemical change | conservation of mass
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| when the original material is transformed into a new material, what has occurred | chemical change
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| how something acts is its | behavior
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| the chemicals before a chemical reaction occurs | reactants
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| the chemicals that are formed after a chemical reaction occurs | products
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| what is used to identify acids and bases | indicators
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| in a chemical equation, both the reactants and the products must be | balanced
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| acids are what two things? | sour and corrosive
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| an example of an acid is a | lemon
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| bases are________ | bitter
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| an example of a base would be | cleaning products
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| acids and bases are measured on what? | pH scale
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| above 7 means | base
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| below 7 means | acid
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| exactly 7 means | neutral
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| tearing paper, wax melting, peeling a potato, and sanding wood are all examples of______ because the substance doesn't change | physical changes
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| wood burning, iron rusting, mild souring, and silver tarnishing are all examples of________ because the substance changes | chemical changes
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| if you have an acid, then the litmus paper will always be what color? | red
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| if you have a base, then the litmus paper will always be_________ | blue
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| when the phenolphthalein paper turns pink, then the substance is a_______ | base
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