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| is anything that has mass and takes up space |
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| a small particle that makes up most types of matter |
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| law of conservation of matter |
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Definition
| states that matter is not created or destroyed - it only changes |
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Definition
| invisble, negatively charged particles |
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Definition
| positively charged, central part of the atom. |
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| the postively charged particles in the nucleus |
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| matter made of only one kind of atom |
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| the number above elements name on the periodic table. tells the number of protons in the nucleus of that element |
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Definition
| atoms of the same element that have different numbers of neutrons |
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Definition
| number of protons plus the number of neutrons it contains # found below the element symbol |
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Definition
| weighted average mass of the isotopes of an element |
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Definition
| generally have a shiny or metallic luster and are good conductors of heat and electricity |
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Definition
| elements that are usually dull in appearance |
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Definition
| elements that have characteristics of metals and nonmetals |
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Definition
| matter that has the same composition and properties throughout |
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Definition
substance whose smallest unit is made up of atoms of more than one element bonded together
e.g. water, salt, sugar |
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Definition
two or more substances(elements or compounds) come together but don't combine to make a new substance
unlike compounds, the proportions of the substance in a mixture can be changed without changing the identity of mixture e.g. air, blood seperate mixtures easily |
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Term
6 -> atomic #, # of protons in nucleus
C < chemical symbol
Carbon < chemical name
12 <- Atomic weight, number of protons + number of neutrons |
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Definition
6 -> atomic #, # of protons in nucleus
C < chemical symbol
Carbon < chemical name
12 <- Atomic weight, number of protons + number of neutrons |
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Term
solid liquid gas plasma
metals non metals and metalloids |
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Definition
solid liquid gas plasma
metals non metals and metalloids |
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Term
carbon dioxide CO2
carbon, two oxygen
H2O hydrogen 2, oxygen 1
water
H2O2
hydorgen peroxide
hydrogen 2, oxygen 2
c6h12o6
sugar |
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Definition
carbon dioxide CO2
carbon, two oxygen
H2O hydrogen 2, oxygen 1
water
H2O2
hydorgen peroxide
hydrogen 2, oxygen 2
c6h12o6
sugar |
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| electron cloud - electrons are so small and fast that they move in a cloud |
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Definition
| electron cloud - electrons are so small and fast that they move in a cloud |
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Term
| not mass < heat, light, emotions, thoughts, ideas |
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Definition
| not mass < heat, light, emotions, thoughts, ideas |
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Definition
| atoms of the same element that have diff. number of neutrons |
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Definition
shiny luster
good conductors of heat and electric.
most are solids at room temp.
malleable - can be shaped
ductile - can be drawn into wires without breaking |
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| nonmetals found on right side of periodic table |
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Definition
dull in appearance
poor conductors
gas at room temp.
brittle, cannot shape without breaking
97% human made of this |
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Term
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Definition
have caharacterisitcs of both metals and nonmetals
OK conductor
solid @ room temp |
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Term
elements 115 known elements
90 naturally occuring elements plus synthetic elements made by scientists |
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Definition
elements 115 known elements
90 naturally occuring elements plus synthetic elements made by scientists |
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Term
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Definition
| tells which elements make up a compound as well as how many atoms of each element are present. |
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| a given compound is always made of the same elements in the same proportion |
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Definition
| a given compound is always made of the same elements in the same proportion |
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Definition
same throughout
milk, soda pop, ice cream, posicle, |
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Definition
you can see diff. parts
taco, pizza, chili |
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| metals solid, shiny/luster, good conductor, malleability, ductility, middle on table |
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Definition
| metals solid, shiny/luster, good conductor, malleability, ductility, middle on table |
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| nonmetals - gas, dull, poor conductor, right side of table |
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Definition
| nonmetals - gas, dull, poor conductor, right side of table |
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| metalloids - solid, shiny/dull ok conductor, border between metals and nonmetals |
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Definition
| metalloids - solid, shiny/dull ok conductor, border between metals and nonmetals |
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Term
| compound's formula tells us which element it is and how many there are. |
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Definition
| compound's formula tells us which element it is and how many there are. |
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Term
| compound is substance whose smallest unit is made up of atoms of more than one element. mixture is 2 or more substances mixed together which don't make a new substance |
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Definition
| compound is substance whose smallest unit is made up of atoms of more than one element. mixture is 2 or more substances mixed together which don't make a new substance |
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Term
| mixtrues is matter most commonly found |
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Definition
| mixtrues is matter most commonly found |
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Term
| elements, compounds, and mixture (three forms of matter) |
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Definition
| elements, compounds, and mixture (three forms of matter) |
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