Atomic Structure and the Periodic Table

Question 1

What are all substances made of

Answer 1

Atoms

Question 2

What is the smallest part of an element that can exist?

Answer 2

An atom

Question 3

What chemical symbol represents sodium

Answer 3

Na

Question 4

What is a compound?

Answer 4

Two or more elements chemically bonded together and they can only be separated by chemical reactions

Question 5

what is the history of the atomic model

Question 6

What is an element?

Answer 6

a substance Made up of one type of the same atom

Question 7

what is an atom

Answer 7

an atom is the smallest part of an element that can exist

Question 8

what is an isotope

Answer 8

Atoms of the same element with different numbers of neutrons

Question 9

how many isotopes does chlorine have

Answer 9

two

Question 10

how are electrons arranged

Answer 10

they are arranged in shells around an atomic nucleas

Question 11

what are properties of group 1 metals

Answer 11

there less dense and softer, they are much more reactive, they have lower melting points

Question 12

do transition metals have a lower melting point then group 1 metals

Answer 12

no group 1s do

Question 13

as you go down group one does the reactivity decrease or increase

Answer 13

the reactivity increases

Question 14

as you got down group 1 does the melting and boiling point decrease or increase

Answer 14

the melting and boiling point DECREASE

Question 15

as you go down group 1 does the relative atomic mass decrease or increase

Answer 15

the relative atomic mass increases

Question 16

how many outer electrons do the group one elements have

Answer 16

1

Question 17

are group 0 elements metals or non metals

Answer 17

non metals

Question 18

are group 0 elements reactive or unreactive

Answer 18

unriactive

Question 19

why are group 0 elements unreactive

Answer 19

because there electronic structure is stable

Question 20

what kind of gasses are group 0 elements

Answer 20

they are [colorluss] monatomic gasses

Question 21

what are monatomic gasses

Answer 21

gas composed of particles (molecules) that consist of single atoms

Question 22

as you go down group 0 does the boiling point increase or decrease

Answer 22

increase

Question 23

are group 7 elements metals or non metals

Answer 23

non metals

Question 24

as you go down group 7 the reactivity decreases or increases

Answer 24

decreases

Question 25

as you go down group 7 does the melting and boiling point decrease or increase

Answer 25

increases

Question 26

as you go down group 7. does the relative molecular mass increase or decrease

Answer 26

increases

Question 27

what is relative molecular mass

Answer 27

he sum of all the relative atomic masses of the atoms in a molecule

Question 28

how many outer shell electrons do halogens have

Answer 28

7

Question 29

how many more electrons do halogens need to be filled

Answer 29

1

Question 30

how many more electrons do halogens need to be filled

Answer 30

1

Question 31

give the two ways halogens react to fill their outer shell in two ways

Answer 31

sharing electrons and gaining an electron