key word - chemistry

Question 1

proton

Answer 1

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

Question 2

nutron

Answer 2

neutron is one of the three subatomic particles that make up an atom. It exists in the nucleus of the atom alongside protons and makes up an atom’s atomic mass with protons.

Question 3

electron

Answer 3

an elementary particle that has a negative charge of electricity and travels around the nucleus of an atom.

Question 4

nuclius

Answer 4

the structure in a cell that contains the chromosomes

Question 5

electron shell

Answer 5

regions surrounding the atomic nucleus containing a specific number of electrons

Question 6

Plum pudding

Answer 6

In Thomson’s plum pudding model of the atom, the electrons were embedded in a uniform sphere of positive charge, like blueberries stuck into a muffin.

Question 7

Nuclear model

Answer 7

any of several theoretical descriptions of the structure and function of atomic nuclei

Question 8

atom

Answer 8

The smallest part of a substance that cannot be broken down chemically. It makes up everything

Question 9

isotope

Answer 9

Atoms with the same number of protons but different numbers of neutrons

Question 10

compound

Answer 10

A pure substance made from more than one type of element chemically bonded together.

Question 11

element

Answer 11

a substance that consists of only one type of atom and it cannot be broken down into anything simpler by chemical means.

Question 12

mixture

Answer 12

made from two or more elements or compounds being mixed together, without the formation of any chemical bonds

Question 13

filtration

Answer 13

sed to separate an insoluble solid from a liquid

Question 14

distillation

Answer 14

a pro`cess used to separate liquids based on their boiling points.