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chemistry

help study for chemistry test

QuestionAnswer
shape, color, and texture are examples of physical properties
when energy is taken in or given off a__________has occurred chemical change
metal rusting is an example of a chemical change
_______measures how much mass is in a given volume density
temperature at which a SOLID turns into a LIQUID melting point
temperature at which a LIQUID turns into a GAS boiling point
in a chemical equation what is often put in front of an element or compound? a coefficient
a formula that uses symbols to show what happens in a chemical reaction equation
total mass is the same is the same befir abd after a physical or chemical change conservation of mass
when the original material is transformed into a new material, what has occurred chemical change
how something acts is its behavior
the chemicals before a chemical reaction occurs reactants
the chemicals that are formed after a chemical reaction occurs products
what is used to identify acids and bases indicators
in a chemical equation, both the reactants and the products must be balanced
acids are what two things? sour and corrosive
an example of an acid is a lemon
bases are________ bitter
an example of a base would be cleaning products
acids and bases are measured on what? pH scale
above 7 means base
below 7 means acid
exactly 7 means neutral
tearing paper, wax melting, peeling a potato, and sanding wood are all examples of______ because the substance doesn't change physical changes
wood burning, iron rusting, mild souring, and silver tarnishing are all examples of________ because the substance changes chemical changes
if you have an acid, then the litmus paper will always be what color? red
if you have a base, then the litmus paper will always be_________ blue
when the phenolphthalein paper turns pink, then the substance is a_______ base
Created by: i<3mattie&gracie
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