Chemical Bonds

Question 1

Chemical Bonds

Answer 1

Force of attraction that exists between atoms

Question 2

Examples of chemical bonds

Answer 2

Ionic and covalent

Question 3

Compounds

Answer 3

Substance that is made of many elements

Question 4

Valence electrons

Answer 4

Number of electrons on the outermost energy level of an atom

Question 5

Stable atoms

Answer 5

An atom is stable when its outermost energy level is fully occupied. Less likel to bon with other atoms.

Question 6

Example of stable atoms

Answer 6

Noble gases like Neon, they have stable atoms structures and will not for chemical bonds with other atoms’

Question 7

Ionic bonding

Answer 7

An ionic bond forms when electrons are transferred from one atom to another.

Question 8

Examples of ionic bonding

Answer 8

Usually a metal and non metal.

Question 9

Covalent bonding

Answer 9

Chemical bond forms when atoms share electrons.

Question 10

Example of covalent bonding

Answer 10

H2O (water) two non-metals

Question 11

Molecule

Answer 11

Group of atoms held together by covalent bonds.

Question 12

Ion

Answer 12

A charged ion. An atom gains or loses an electron and therefore carries an electric charge.

Question 13

Cation

Answer 13

Positive ion that has lost electrons, it has a positive charge.

Question 14

Anion

Answer 14

Negative ion that has gained electrons, it has a negative charge.

Question 15

Reactants

Answer 15

Substances that are present at the beginning of a chemical reaction

Question 16

Products

Answer 16

Substances that are formed by the chemical reaction

Question 17

Chemical equation

Answer 17

reactants –> products

CaCl2(aq)+2AGNO3(aq)–>Ca(NO3)2(aq)+2AgCL(s)

Question 18

Example of oxidation

Answer 18

Rust
3FE2+2H2O2–>2F3+2H2O+O2
(ferrous iron +hydrogen peroxide–>ferric acid +water+oxygen)