Chem Definition

Question 1

Define Atoms

Answer 1

Atoms are the basic particles of the chemical elements. An atom consists of a nucleus of protons and generally neutrons, surrounded by an electromagnetically bound swarm of electrons.

Question 2

Define Protons

Answer 2

The proton is a subatomic particle with a positive electrical charge.

Question 3

Define Exited State

Answer 3

If an atom absorbs energy such as heat or light, the electrons can become excited and jump up to other orbitals

Question 3

Define Neutrons

Answer 3

The neutron is a subatomic particle, which has no electric charge.

Question 4

Define Electron Shells

Answer 4

Electron shell, regions surrounding the atomic nucleus containing a specific number of electrons.

Question 5

Define Electrons

Answer 5

The electron is a negatively charged subatomic particle that is found in all atoms.

Question 6

Define Ground state

Answer 6

The ground state of an atomic nucleus, atom, or molecule is its lowest energy state.

Question 6

Define Electron Configuration

Answer 6

Electron configurationsdescribe where electrons are located around the nucleus of an atom

Question 7

Define Photon

Answer 7

A photon is a tiny particle that comprises waves of electromagnetic radiation.

Question 8

Define Valence Electrons

Answer 8

Valence electrons are electrons in the outermost shell of an atom.

Question 8

Define Redshift

Answer 8

Redshift occurs when a light source moves away from an observer and therefore increases and elongates its wavelengths of light, resulting in the light having redder frequencies

Question 9

Define Periods

Answer 9

A period is a horizontal row of the periodic table. There are seven periods in the periodic table, with each one beginning at the far left. A new period begins when a new principal energy level begins filling with electrons.

Question 10

Define Groups

Answer 10

Group, in chemistry, a column in the periodic table of the chemical elements. In a group, the chemical elements have atoms with identical valence electron.

Question 11

Define Ionic Compound

Answer 11

Ionic compound, any of a large group of chemical compounds consisting of oppositely charged ions, wherein electron transfer, or ionic bonding occured

Question 11

Define Cation

Answer 11

Cations are ions that are positively charged.

Question 12

Define Valence Shell

Answer 12

The outermost shell of any atom is called the valence shell

Question 13

Define Anions

Answer 13

Anions are ions that are negatively charged.

Question 13

Define Ion

Answer 13

Ion, any atom or group of atoms that bears one or more positive or negative electrical charges

Question 14

Define Ionic Bond

Answer 14

An ionic bond is a chemical bond formed when one atom gives up one or more electrons to another atom.

Question 15

Define Covalent Molecules

Answer 15

A covalent compound is a molecule formed by covalent bonds,

Question 16

Define Covalent Bond

Answer 16

Covalent bond, in chemistry, the interatomic linkage that results from the sharing of an electron pair between two atoms.

Question 17

Define Reactivity

Answer 17

Reactivity is a measure of how readily a substance undergoes a chemical reaction

Question 18

Define Displacement Reaction

Answer 18

A displacement reaction occurs when a more reactive element displaces, or pushes out, a less reactive element from a compound that contains the less reactive element.

Question 19

Define Atomic Mass

Answer 19

Atomic mass, the quantity of matter contained in an atom of an element

Question 20

Define Balanced Chemical Equation

Answer 20

A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge is the same.

Question 21

Define Atomic Number

Answer 21

Atomic number, the number of a chemical element in the periodic system and on the periodic table that equals the number of protons in the nucleus of the atom.