Chem test

Question 1

what is chemistry

Answer 1

how matter and energy and the energy between them changes

Question 2

what is matter

Answer 2

something with mass and volume

Question 3

what is mass

Answer 3

the amount of stuff that makes an object, similar to weight but not affected by gravity

Question 4

what is volume

Answer 4

The amount of space something takes up

Question 5

what is an atom

Answer 5

the smallest piece of an element

Question 6

what are molecules

Answer 6

2+ atoms bonded together (they share valance electrons)

Question 7

what is an ion

Answer 7

is an atom that is charged positively or negatively (either gaining to losing valance electrons creating a reaction)

Question 8

hot particles move ________

Answer 8

faster

Question 9

cold particles move _______

Answer 9

slower

Question 10

the closer particles get the _________ attraction they have

Answer 10

less

Question 11

the 3 subatomic particles are

Answer 11

protons, electrons and neutrons

Question 12

the 6 types of metals from left to right are

Answer 12

Alkali metals, Alkali earth metals, lanthanoids, actinoids, Transitional metals and post-transitional metals

Question 13

what is the charge and amu of a proton

Answer 13

charge of +1, and 1 amu

Question 14

what is the charge and amu of an electron

Answer 14

charge of -1, and 1/2000 amu

Question 15

what is the charge and amu of a neutron

Answer 15

no charge, and 1 amu

Question 16

the number of p+ is equal to the number of

Answer 16

e-

Question 17

what is a natural element

Answer 17

elements you find outside in the natural world, like if you walked outside

Question 18

what is a synthetic element

Answer 18

is an element made in a lab; they are radioactive, and they decay into stable elements. they are all the elements beyond atomic #92

Question 19

what is the nucleus

Answer 19

is the dense positively charged core of an atom that is made of protons and neutrons

Question 20

What is a bhor-rutherford diagram?

Answer 20

a way to show what an atom or ion is made of

Question 21

how you place the electrons on a bhor-rutherford diagram

Answer 21

2,8,8,4

Question 22

what is an energy shell

Answer 22

it is a ring of electrons

Question 23

what is a Lewis dot diagram

Answer 23

is the atomic symbol (Li) with the valance electrons around it

Question 24

what is a valance electron

Answer 24

the electrons on the last ring/outside of the energy shells

Question 25

how can you find the number of valence electrons

Answer 25

it is the same as the group number

Question 26

how can you find the number of energy shells on a bhor-rutherford

Answer 26

the number of energy shells is equal to the period number on the periodic table

Question 27

why is a Lewis dot diagram useful

Answer 27

it helps in predicting the number and type of bonds which can be formed around an atom, it has to do with stabilizing an atom

Question 28

when you lose or gain electrons your form _____

Answer 28

ions

Question 29

when when atoms share valance electrons they form ____

Answer 29

molecules

Question 30

what does it mean if an atom is not stable

Answer 30

it means it does not have a full valance shell

Question 31

what do you do to show an atom becomes an ion?

Answer 31

you add brackets and then show if it is negative or positive

Question 32

the fewer electrons you have to move the ______ reactive it is

Answer 32

more

Question 33

if you need fewer electrons to complete the energy shell the _____ reactive it is

Answer 33

more

Question 34

what charge do atoms have

Answer 34

they do not have a charge

Question 35

what charge do ions have

Answer 35

they have a positive or negative charge

Question 36

metals react when they ______ valance electrons

Answer 36

lose, they have the valance further away

Question 37

nonmetals react when they ______ valance electrons

Answer 37

gain, they attract other valance electrons

Question 38

in the bottom left corner of the periodic table, the elements are ______

Answer 38

bigger

Question 39

what do you call the elements between metals and nonmetals on the periodic table?

Answer 39

metalloids

Question 40

what are the 2 kinds of nonmetals

Answer 40

reactive nonmetals and noble gases