isotopes and atoms

Question 1

What is an isotope?

Answer 1

Atoms that have the same number of protons but different number of neutrons

Question 2

Isotopes have…

Answer 2

identical chemical properties but different physical properties

Question 2

Relative Isotopic Mass

Answer 2

The mass of an individual isotope of each element compared to the 1/12th of the mass of a carbon-12 atom

Question 3

Relative Isotopic Abundance

Answer 3

Percentage, measure of how common a particular isotope of an element is relative to all the isotopes of an element found in nature

Question 4

Relative Atomic Mass

Answer 4

Weighted average mass of all the naturally occurring isotopes of an element compared to 1/12th of the mass of a carbon-12 atom

Question 5

Isotopes with significantly different number of neutrons

Answer 5

are to be unstable and radioactive, undergo radioactive decay emitting various forms of radiation to become lighter, more stable nuclei

Question 6

What is an element?

Answer 6

made up of just one type of atom, cannot be broken down into any other substance

Question 7

Atomic number

Answer 7

number of protons

Question 8

Mass number

Answer 8

protons and neutrons

Question 9

Electrons

Answer 9

negatively charged particles, e -,1/1800 relative mass to protons

Question 10

Nucleus

Answer 10

includes protons and neutrons 99.9% of atom mass

Question 11

ions

Answer 11

electrically charged species formed when atoms gained or lose electrons

Question 12

cations

Answer 12

postively charged, atoms lose electrons

Question 12

anions

Answer 12

negatively charged, atoms gains more electrons