Atoms and Perodic Table Megan Mayer

Question 0

What is a proton?

Answer 0

A particle that has a positive charge and that is found in the nucleus of an atom

Question 1

What is the nucleus?

Answer 1

An atoms central region which is made up of protons and neutrons

Question 2

What is neutron?

Answer 2

A particle that has no charge and that is found in the nucleus of an atom

Question 3

What is a electron?

Answer 3

A particle that has a negative charge

Question 4

What is a orbital?

Answer 4

A region in a atom where there is a high probability of finding electrons.

Question 5

What is a valence electron?

Answer 5

An electron that is found in the outer most shell of an atom and determines the atoms chemical properties

Question 6

What is the periodic law?

Answer 6

The law that repeats Chemical and physical properties of elements change on the periodic table with the atomic numbers

Question 7

What is a period?

Answer 7

A horizontal row of elements on the periodic table

Question 8

What is a group?

Answer 8

A vertical column of the elects on the periodic table

Question 9

What is a ion?

Answer 9

A atom or group of atoms that has lost or gained one or more electrons and ha s a negative or positive charge

Question 10

What is a atomic number?

Answer 10

The number of protons in the nucleus of an atom

Question 11

What is a mass number?

Answer 11

The sum of the numbers of protons and neutrons in the nucleus of an atom

Question 12

What is a isotope?

Answer 12

An atom that has the same number of protons as other atoms of the same element do but has a different amount of neutrons

Question 13

What is the atomic mass unit (amu)?

Answer 13

A unit of mass that describes the mass of an atom or molecule, it’s exactly one twelfth of a carbon atom with mass number of 12

Question 14

What is the average atomic mass?

Answer 14

The weighted average of the masses of all naturally occurring isotopes of an element

Question 15

What is a metal?

Answer 15

An element that is shiny and conducts heat and electricity well

Question 16

What is a nonmetal?

Answer 16

An element that conducts heat and electricity poorly

Question 17

What is a semiconductor?

Answer 17

An element or compound that conducts electric currents better than an insulator but not as good as a conductor

Question 18

What is alkali metal?

Answer 18

One of the elements of Group 1 of the periodic table

Question 19

What is alkaline earth metal?

Answer 19

One of the elements of Group 2 of the periodic table

Question 20

What is transition metal?

Answer 20

One of the elements of Groups 3-12 of the periodic table

Question 21

What is halogen?

Answer 21

One of the elements of Group 17 of the periodic table

Question 22

What is noble gas?

Answer 22

An unreactive element of group 18 of the periodic table

Question 23

What is a mole?

Answer 23

The Si unit used to measure the amount of a substance whose number of particles is the same as the number of atoms

Question 24

What is Avogadro’s constant?

Answer 24

It equals 6.022 x 10^23/ mol. The number of particles in 1 mol

Question 25

What is molar mass?

Answer 25

The mass in grams of 1 mil of a substance.

Question 26

What is conversion factor?

Answer 26

A ratio that is derived from the equality of two different units and that can be used to convert from one unit to another