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Science > Chemistry > Flashcards

Chemistry Flashcards

1
Q

what is mass

A

weight of the matter

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2
Q

what is volume

A

how much space it takes up

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3
Q

explain a solid

A

low energy particles, vibrate, very close together

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4
Q

explain a liquid

A

medium energy particles, bounce around, not too close together

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5
Q

explain a gas

A

high energy particles, very fast, far apart

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6
Q

explain melting and freezing

A

melt= solid to liquid freezing= liquid solid

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7
Q

explain condensation and evaportation

A

condensation= gas to liquid evaporation=liquid to gas

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8
Q

explain sublimation and deposition

A

sub= solid to gas deposition= gas to solid

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9
Q

what is special about a element

A

has 1 atom

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10
Q

what is a compound

A

made of 2 elements

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11
Q

what is a homogenous mixture

A

same through out (peanut butter cookie)

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12
Q

what is a hetengenous mixture

A

not same through out (chip cookie)

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13
Q

how small is a atom

A

its the smallest thing in the world

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14
Q

proton charge

A

positive

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15
Q

electron charge

A

negative

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16
Q

neutron charge

A

neutral

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17
Q

whats a atomic mass

A

mass of one atom of element

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18
Q

whats a atomic number

A

location of element on table and how many protons

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19
Q

whats a ion charge

A

tells number of electrons that are loss/gained when ion is formed

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20
Q

whats a chemical family

A

in same vertical column and also share similar familys

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21
Q

what is a period

A

horizontal rows on periodic table

22
Q

whats a valence shell

A

outer electron shell

23
Q

what is cation

A

positive metals that take away electrons

24
Q

what is a anion

A

negative non metals that borrow electrons

25
Q

what is matter

A

anything that has a mass and volume

26
Q

what are the 3 points of the kinetic molecular theory

A

all matter is made out of very small particles, there is empty space between the particles, and the particles are always moving

27
Q

what does energy make particles do

A

the more energy a particle has, the faster they move and farther they get

28
Q

what happens when the heat increases

A

more kinetic energy is made, particles move faster, and it expands

29
Q

what happens when it becomes cooler

A

less kinetic, particles are slower, and it contracts

30
Q

whats a melting point

A

when solid becomes liquid

31
Q

whats a boiling point

A

when liquid becomes gas

32
Q

explain density rules

A

floats in fluid= less dense, hovers in place=same density, sinks in fluid= more dense

33
Q

explain physical change

A

properties remain same (can be turned back to normal), no new substance is made,

34
Q

explain chemical change

A

product is different or new than the starting matter, new color or heat or bubbles

35
Q

where are protons and neutrons found

A

nucleus of the atom

36
Q

where do electrons travel

A

the shells

37
Q

whats a isotope

A

atom with same amount of electrons and protons

38
Q

what are the 3 classifications of elements

A

metals, non metals, metalloids

39
Q

what are alkali

A

high reactive metals that react to ozygen and water

40
Q

what are alkaline earth metals

A

less reactive metals, burn if heated

41
Q

what are halogens

A

highly reactive non metals

42
Q

what are noble gases

A

very stable non metals because they are full of electrons

43
Q

what is a bohr model

A

shows all of the electrons in each shell

44
Q

what is a valence shell

A

outer shell of a atom, holds up to 18 electrons,

45
Q

what do atoms always want to be

A

stable

46
Q

what will atoms do to stay stable

A

they take away or give away electrons from other atoms to refill the valence shell

47
Q

what happens when a atom has gained/lost atoms

A

will become charged

48
Q

John dalton

A

Introduced the atomic theory

49
Q

Jj thompson

A

Electron

50
Q

Ernest rutherford

A

Discovered structure of atom

51
Q

Niels Bohr

A

Bohr Model

Science (9 decks)

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