science

Question 1

an atom/group of atoms that has gained or lost one or more of its valence electrons.

Answer 1

Ions

Question 2

causes a net positive charge

Answer 2

cation

Question 3

causes a net negative charge

Answer 3

anion

Question 4

one type of atom

Answer 4

monatomic ion

Question 5

2 more types of atoms in an ion

Answer 5

⦁ Polyatomic ion

Question 6

made up of 2 or more atoms

Answer 6

Molecules

Question 7

cation+anion

Answer 7

Ionic Compounds

Question 8

total number of electrons the atom gains or loses.

Answer 8

⦁ Oxidation number/ state

Question 9

elements with different oxidation numbers.

Answer 9

⦁ Transition elements

Question 10

used to study human activity in the past

Answer 10

Carbon dating

Question 11

is a branch of chemistry that deals with studying carbon-containing compounds

Answer 11

Organic chemistry

Question 12

is the binding of an element to itself through covalent bonds to form a chain or ring molecules

Answer 12

Catenation

Question 13

organic compounds composed of carbon and hydrogen atoms, these are naturally occurring compounds.

Answer 13

Hydrocarbon

Question 14

a German chemist who made urea. Urea treats dry or rough skin conditions and some nail problems. It is also naturally present in urine

Answer 14

Friedrich Wöhler

Question 15

can form branched or straight-chained organic compounds. It can also form ring structures or cyclic structures such as aromatic compounds.

Answer 15

Carbon

Question 16

two or more organic compounds with the same formulas but have a different arrangement of atoms.

Answer 16

⦁ Isomers

Question 17

two or more forms of chemical element in the same physical state.

Answer 17

⦁ Allotropes

Question 18

the purest form of carbon and very hard to end.

Answer 18

⦁ Diamond

Question 19

is another allotrope of carbon with a trigonal structure from a carbon atom linked with other carbon atoms

Answer 19

⦁ Graphite

Question 20

is another allotrope of carbon comprising 30-900 carbon atoms connected by single and double bonds

Answer 20

⦁ Fullerene

Question 21

are based on chains of carbon atoms

Answer 21

⦁ Aliphatic hydrocarbons

Question 22

is a single covalent bond, and it is a saturated hydrocarbon. The simplest alkane is methane.

Answer 22

⦁ Alkan

Question 23

• Can be arranged in the form of a ring - saturated hydrocarbons - smallest —> cyclopropane.

Answer 23

cyclic alkanes

Question 24

one of the three classes of compounds found in petroleum

Answer 24

⦁ Aromatic hydrocarbons