atoms

Question 1

what is atoms

Answer 1

smallest particles of an element

Question 2

what is a atom consisting of

Answer 2

-nucleus
-nucleus contains electron and protons

Question 3

what are no. of protons called

Answer 3

protons/atomic number

Question 4

mass of atoms

Answer 4

-contributed by protons and neutrons
- no of protons + no of neutrons
- protons= electrons

Question 5

periodic table

Answer 5

-protons number
-atomic symbol
- name
- atomic mass

Question 6

relative mass

Answer 6

protons: +1
neutrons: 1
electrons: 1/1840

Question 7

relative charge

Answer 7

protons: +1
neutrons: 0
electrons: -1

Question 8

ions

Answer 8

when an atoms gains or loses one or more ELECTRONS

Question 9

ions (plus or minus)

Answer 9

-positive ion is form when an atom LOSES one or more electrons
- negative ion is form when an atom gains one or more electrons

Question 10

molecules

Answer 10

-consists of two or more atoms chemically joined tgt
- atoms of same element have same colour, size and shape

Question 11

molecules of an element/compound

Answer 11

-consists of 2 or more atoms of the SAME type chemically join tgt (element)
-consist of 2 or more atoms of DIFF types chemically joined tgt (compound)

Question 12

writing chemical formula

Answer 12

-type of element in the compound
-number of atoms for each element in the compound

Question 13

compound

Answer 13

diff types of element join tgtj

Question 14

negative ION
positive ION

Answer 14

non metal
metal

Question 15

isotepes

Answer 15

same amt of proton, but diff amt of neutron