Chemistry

Question 1

Chemical

Answer 1

Substances that can undergo change to produce new substances.

Question 2

Examples of chemicals matter

Answer 2

-Flammability
-Acidity
-Corrosiveness
-Combustibility

Question 3

Physical

Answer 3

Properties that can be seen with our senses.

Question 4

Pure Substance

Answer 4

Consists only of one element or one compound

Question 5

Mixture

Answer 5

Consists of two or more different substances, not chemically joined together.

Question 6

Element

Answer 6

A pure substance that is made from one type of atom.

Question 7

Compound

Answer 7

Made up of different elements joined together by a chemical bond.

Question 8

Solution

Answer 8

Mixture of 2+ substances, evenly mixed.

Question 9

Suspension

Answer 9

A mixture between a liquid and particles of a solid.

Question 10

Mechanical Mixture

Answer 10

2+ particle types that can be seen as different kinds of matter and are not evenly mixed.

Question 11

Atomic Number

Answer 11

The number of protons in the nucleus (which is the same as the number of electrons in the atom).

Question 12

Groups

Answer 12

Groups or families because of their similar chemical behavior. The chemical elements have atoms with identical valence electron counts. (Columns)

Question 13

Periods

Answer 13

A row of chemical elements. All elements in a row have the same number of electron shells. Each next element in a period has one more proton.

Question 14

Types of families

Answer 14

Alkali metals, Alkaline earth metals, transition metals, non-metals, halogens, noble gases, rare earth metals

Question 15

Alkaline metals

Answer 15

Easy to shape, malleable, and conductors of thermal energy. It reacts violently with water. (Exp. Lithium, Li)

Question 16

Alkaline earth metals

Answer 16

Flexible, ductile, and conducts electricity. It reacts mildly with water. (Exp. Magnesium, Mg)

Question 17

Transition metals

Answer 17

Lustre, malleability, and resistance to corrosion.

Question 18

Non-metals

Answer 18

Not shiny, ductile, or malleable. (Exp. Carbon, C)

Question 19

Noble gases

Answer 19

A gas that does not react at all. (Exp. Neon, Ne)

Question 20

Halogens

Answer 20

A highly reactive gas. (Exp. Chlorine, Cl)

Question 21

Ionic

Answer 21

metals + non-metals

Question 22

Covalent

Answer 22

non-metals + non-metals

Question 23

Cations

Answer 23

Positively-charged ions (atoms or groups of atoms that have more protons than electrons due to having lost one or more electrons).

Question 24

Anions

Answer 24

Negatively-charged ions (meaning they have more electrons than protons due to having gained one or more electrons).