Chemisrty

Question 1

Atom

Answer 1

the smallest particle of a chemical element that can exist

Question 2

matter

Answer 2

physical substance in general, as distinct from mind and spirit; (in physics) that which occupies space and possesses rest mass, especially as distinct from energy.

Question 3

atomic particles

Answer 3

A subatomic particle is a unit of matter or energy that’s the fundamental makeup of all matter

Question 4

electron

Answer 4

a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.

Question 5

neutron

Answer 5

a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.

Question 6

proton

Answer 6

a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron.

Question 7

AMU

Answer 7

atomic mass unit

Question 8

electron shell

Answer 8

An electron shell is the outside part of an atom around the atomic nucleus.

Question 9

element

Answer 9

an essential or characteristic part of something abstract.

Question 10

compound

Answer 10

thing that is composed of two or more separate elements

Question 11

periodic table

Answer 11

a table of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure (and hence similar chemical properties) appear in vertical columns

Question 12

atomic number

Answer 12

the number of protons in the nucleus of an atom, which is characteristic of a chemical element and determines its place in the periodic table.

Question 13

atomic mass

Answer 13

the mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes.