chemistry terms

Question 1

Atomic number

Answer 1

no. of protons in an atom

Question 2

mass number

Answer 2

no of protons plus neutrons in an atom

Question 3

Relative atomic mass

Answer 3

mass of the average of isotopes compared to 1/12 of carbon 12

Question 4

Isotopes

Answer 4

atom with same no of protons but different no of neutrons

Question 5

relative isotopic mass

Answer 5

mass of 1 isotope compared to 1/12 of carbon 12

Question 6

relative molecular mass

Answer 6

mass of all the atoms in one molecule compared to 1/12 carbon 12

Question 7

relative formula mass

Answer 7

mass of the empirical formula of a substance compared to 1/12 carbon 12

Question 8

mass to charge ratio

Answer 8

the ratio of mass(compared to 1/12c12) to number of charges in an atom(compared to 1 electron)

Question 9

ionic bond

Answer 9

electrostatic attraction created by the loss of electrons of one metal and the gain of electrons for one non metal, resulting in opposing charges and so attraction

Question 10

covalent bond

Answer 10

electrostatic attraction created by the sharing of outer shell electrons to gain a full outer shell between 2 non metals

Question 11

metallic bond

Answer 11

electrostatic attraction created by metals loosing electrons to become cations and the electrons flowing between these cations to carry charge and hold the cations together