Science Ch1 Test
Terms
undefined, object
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- weight
- measure of force of gravity on you
- common volumes
- cubic centimeter, liter, milliliter
- compound
- substance made of two or more elements that are chemically combined
- solution
- best mixed of all possible mixtures
- chemical change
- substances combine or break apart to form new substances
- physical change
- alter the form of a substance but not its identity
- equation of volume
- lxwxh
- melting point
- temperature at which solid melts
- to obtain element from compound...
- must cause chemical reaction
- 4 quarts=
- 1 gallon
- mass
- measurement of amount of matter an object contains
- method used to release iron metal from its ore involves...
- heating the ore and carbon together
- 1 liter=
- 1000 milliliters
- characteristic property
- property which stays the same for a given substance, can be used to identify unknown matter
- 3 Principal States of Matter
- solid, liquid, gas
- mixture
- consists of two or more substances that are in the same place but not chemically combined
- pure substance
- made of only one kind of matter and has definite properties
- 2 ways to measure matter
- weight, mass
- ore
- any rock that contains a metal or other useful material
- electrode
- metal strips placed in copper compound solution
- boiling point
- temperature at which liquid boils
- electrolysis
- method used to break down a copper compound
- chemical bond
- force that holds two atoms together
- cubic centimeter
- cm3
- mass stays same..
- no matte rwhat
- 1 ml=
- cm3
- john dalton
- formed theory about atoms
- atom
- smallest particle of an element
- volume
- amount of space matter occupies
- 1 inch=
- 2.54 cm
- 3 elements from Earth
- iron,copper,gold
- molecule
- group of atoms joined together and act as a single unit
- element
- pure substances that cannot be broken down into other substances, form every object
- 1 pint=
- 16 ounces
- democritus
- greek philosopher, first to believe matter is formed of small pieces, thought of atomos
- density
- relates mass and volume of an object
- equation of density
- mass divided by volume
- 1 quart=
- 1000ml, 32 ounces
- 1 cup=
- 8 ounces
- chemical activity
- ability of a substance to undergo a specfic chemical change
- international system of units
- system scientists use to measure properties of matter
- 2 General Categories of Matter
- mixtures, pure substances
- example of characteristic property
- chemical activity
- example of a unit of density
- grams/milliliter