atomic structure

Question 1

what are atoms made up of

Answer 1

protons, neutrons, and electrons

Question 2

what are protons and neutrons both knows as

Answer 2

nucleons

Question 3

what is the accepted model of the atom

Answer 3

nuclear model

Question 4

what is the mass of a proton

Answer 4

1.67 x 10^-27kg 1

Question 5

what is the charge of a proton

Answer 5

1.60 x 10^-19C +1

Question 6

what is the mass of a neutron

Answer 6

1.67 x 10^-27kg 1

Question 7

what is the charge of a neutron

Answer 7

0C 0

Question 8

hat is the mass of a electron

Answer 8

9.11 x 10^-31kg 0.0005

Question 9

what is the charge of a electron

Answer 9

-1.60 x 10^-19C -1

Question 10

what is the proton number

Answer 10

the number of protons in the nucleus, also the same as the number of electrons

Question 11

what is the symbol for proton number

Answer 11

Z

Question 12

how does proton number define an element

Answer 12

no two elements will have the same number of protons

Question 13

what is the nucleon number

Answer 13

total number of protons and neutrons

Question 14

what is the symbol of nucleon number

Answer 14

A

Question 15

what are isotopes

Answer 15

atoms with the same number of protons but different numbers of neutrons

Question 16

what do all living things contain

Answer 16

the same percentage of radioactive carbon-14 taken in from the atmosphere

Question 17

what happens to the carbon-14 after living things die

Answer 17

decreases over time as it decays into stable elements

Question 18

how can scientists use carbon-14 to find out how old something is

Answer 18

they can calculate age of dead organic matter by using the isotopic data to find the percentage of radioactive carbon-14 thats left in the object

Question 19

what is the specific charge of a particle

Answer 19

its charge / mass in (C kg^-1)