2.1 2.2

Question 1

Nucleus

Answer 1

In the middle of the atom, holds protrons and neutrons. contains DNA and cells activities.

Question 2

Electron

Answer 2

Negatively charged on the outside of the nucleus

Question 3

Element

Answer 3

Matter that is made up of one kind of Atom

Question 4

Isotope

Answer 4

Atoms that has different numbers of neutrons of the same element

Question 5

Compound

Answer 5

Substance of multiple elements

Question 6

Ionic bond

Answer 6

Bond that is created when one or more electrons move from one Atom to another

Question 7

Ion

Answer 7

An atom that is posited or negatively charged

Question 8

Covalent bond

Answer 8

Bond created by sharing electrons from atom to atom

Question 9

Molecule

Answer 9

Tiniest unit in compounds

Question 10

Van def Waals forces

Answer 10

A tiny attraction that is created between the oppositely charged territory of close atoms

Question 11

Cohesion

Answer 11

The drawing between molecules of identical substances

Question 12

Adhesion

Answer 12

The drawing between molecules of unlike substances

Question 13

Mixture

Answer 13

Multiple elements or compounds that are mixed together but don’t bond

Question 14

Solution

Answer 14

Mixture of multiple substances in which the molecules are equally spread

Question 15

Solute

Answer 15

Dissolved in a solvent to create a solution

Question 16

Solvent

Answer 16

Solute is dissolved to create a solution

Question 17

Suspension

Answer 17

Water and non-dissolvable mixture together

Question 18

pH scale

Answer 18

Measurement system used to show the concentration of hydrogen ions in solutions

Question 19

Acid

Answer 19

Compound that creates hydrogen in solutions

Question 20

Base

Answer 20

Compound that creates (OH+) hydroxide ions in solution

Question 21

Buffer

Answer 21

Shallow acid or base that reacts with strong acid or base to stop changes in pH

Question 22

Atom

Answer 22

General matter