structure of an atom

Question 1

what is an atom

Answer 1

Smallest unit of matter
the smallest particle that has the same properties of its element
“Building blocks of matter”

Question 2

how many parts does an atom have

Answer 2

2; the nucleus and electrons

Question 3

what is the a nucleus of an atom and what is it made of

Answer 3

the central core of an atom; protons and neutrons

Question 4

proton, electrons, and neutron electric charges

Answer 4

protons have positive charge
electrons have negative charge
neutrons have no charge, they’re neutral

Question 5

how to determine how many protons, electrons, and neutrons

Answer 5

there are the same amount of protons and electrons, making their charges cancel each other out

Question 6

what are isotopes

Answer 6

atoms of an element that have the same amount of protons but different amount of neutrons

isotopes with more neutrons are heavier and those with less are lighter

Question 7

isotope parts

Answer 7

element symbol-num., identifies the different types of isotopes (the number is its mass number)
EXAMPLE: chlorine-37

mass number goes on the upper left of the element symbol
atomic number goes on the lower left

Question 8

How to get the mass number

Answer 8

By adding the protons and neutrons

Question 9

how to get the amount of neutrons

Answer 9

subtracting the mass number with its atomic number