Structure Of Matter

Question 1

Chemical bond

Answer 1

The attractive forces that hold different atoms or ions together in compounds

Question 2

Chemical structure

Answer 2

The arrangement of atoms in a substance

Question 3

Bond length

Answer 3

The average distance between the nuclei of two bonded atoms

Question 4

Bond angle

Answer 4

The angle formed by two bonds to the same ion

Question 5

Hydrogen bond

Answer 5

weak bond between two molecules resulting from an electrostatic attraction between a proton in one molecule and an electronegative atom in the other

Question 6

Ionic bond

Answer 6

A bond formed by the attraction between oppositely charged ions

Question 7

Metallic bond

Answer 7

A bond formed by the attraction between positively charged metal ions and the electrons around them

Question 8

Covalent bond

Answer 8

A bond formed when atoms share one or more pairs of electrons

Question 9

Polyatomic ion

Answer 9

An ion made f two or more atoms

Question 10

Formula unit

Answer 10

the empirical formula of any ionic or covalent network solid compound

Question 11

Nonpolar covalent bond

Answer 11

chemical bond where two atoms share a pair of electrons with each other.

Question 12

Polar covalent bond

Answer 12

Polar covalent bonding is a type of chemical bond where a pair of electrons is unequally shared between two atoms.

Question 13

Empirical formula

Answer 13

The composition of a compound in terms of the relative numbers and kinds of atoms in the simplest ratio

Question 14

Molecular formula

Answer 14

A chemical formula that shows the number and kinds of atoms in a molecule but not the arrangement of atoms

Question 15

Organic compound

Answer 15

A covalently bonded compound that contains carbon, excluding carbonates and oxides

Question 16

Polymer

Answer 16

Large molecule that is formed by more than five monomers or small units

Question 17

Carbohydrate

Answer 17

Any organic compound that is made of carbon, hydrogen, and oxygen and that provides nutrients to the cells of living things

Question 18

Protein

Answer 18

An organic compound that is made of one or more chains of amino acids and that is a principal component of all cells

Question 19

Amino acid

Answer 19

Any one of 20 different molecules that contain an carboxyl and an amino group and that combine to form proteins

Question 20

Hydrocarbon

Answer 20

a compound of hydrogen and carbon, such as any of those that are the chief components of petroleum and natural gas.

Question 21

Alkane

Answer 21

any of the series of saturated hydrocarbons including methane, ethane, propane, and higher members.

Question 22

Alkene

Answer 22

any of the series of unsaturated hydrocarbons containing a double bond, including ethylene and propylene.

Question 23

DNA

Answer 23

deoxyribonucleic acid, a self-replicating material present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information.