Chemistry

Question 1

what is mass

Answer 1

weight of the matter

Question 2

what is volume

Answer 2

how much space it takes up

Question 3

explain a solid

Answer 3

low energy particles, vibrate, very close together

Question 4

explain a liquid

Answer 4

medium energy particles, bounce around, not too close together

Question 5

explain a gas

Answer 5

high energy particles, very fast, far apart

Question 6

explain melting and freezing

Answer 6

melt= solid to liquid freezing= liquid solid

Question 7

explain condensation and evaportation

Answer 7

condensation= gas to liquid evaporation=liquid to gas

Question 8

explain sublimation and deposition

Answer 8

sub= solid to gas deposition= gas to solid

Question 9

what is special about a element

Answer 9

has 1 atom

Question 10

what is a compound

Answer 10

made of 2 elements

Question 11

what is a homogenous mixture

Answer 11

same through out (peanut butter cookie)

Question 12

what is a hetengenous mixture

Answer 12

not same through out (chip cookie)

Question 13

how small is a atom

Answer 13

its the smallest thing in the world

Question 14

proton charge

Answer 14

positive

Question 15

electron charge

Answer 15

negative

Question 16

neutron charge

Answer 16

neutral

Question 17

whats a atomic mass

Answer 17

mass of one atom of element

Question 18

whats a atomic number

Answer 18

location of element on table and how many protons

Question 19

whats a ion charge

Answer 19

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

Question 20

whats a chemical family

Answer 20

in same vertical column and also share similar familys

Question 21

what is a period

Answer 21

horizontal rows on periodic table

Question 22

whats a valence shell

Answer 22

outer electron shell

Question 23

what is cation

Answer 23

positive metals that take away electrons

Question 24

what is a anion

Answer 24

negative non metals that borrow electrons

Question 25

what is matter

Answer 25

anything that has a mass and volume

Question 26

what are the 3 points of the kinetic molecular theory

Answer 26

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

Question 27

what does energy make particles do

Answer 27

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

Question 28

what happens when the heat increases

Answer 28

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

Question 29

what happens when it becomes cooler

Answer 29

less kinetic, particles are slower, and it contracts

Question 30

whats a melting point

Answer 30

when solid becomes liquid

Question 31

whats a boiling point

Answer 31

when liquid becomes gas

Question 32

explain density rules

Answer 32

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

Question 33

explain physical change

Answer 33

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

Question 34

explain chemical change

Answer 34

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

Question 35

where are protons and neutrons found

Answer 35

nucleus of the atom

Question 36

where do electrons travel

Answer 36

the shells

Question 37

whats a isotope

Answer 37

atom with same amount of electrons and protons

Question 38

what are the 3 classifications of elements

Answer 38

metals, non metals, metalloids

Question 39

what are alkali

Answer 39

high reactive metals that react to ozygen and water

Question 40

what are alkaline earth metals

Answer 40

less reactive metals, burn if heated

Question 41

what are halogens

Answer 41

highly reactive non metals

Question 42

what are noble gases

Answer 42

very stable non metals because they are full of electrons

Question 43

what is a bohr model

Answer 43

shows all of the electrons in each shell

Question 44

what is a valence shell

Answer 44

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

Question 45

what do atoms always want to be

Answer 45

stable

Question 46

what will atoms do to stay stable

Answer 46

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

Question 47

what happens when a atom has gained/lost atoms

Answer 47

will become charged

Question 48

John dalton

Answer 48

Introduced the atomic theory

Question 49

Jj thompson

Answer 49

Electron

Question 50

Ernest rutherford

Answer 50

Discovered structure of atom

Question 51

Niels Bohr

Answer 51

Bohr Model