BIOL111

Question 1

Element

Answer 1

A substance that cannot by broken down to other substances by chemical reactions

Question 2

Atom

Answer 2

Smallest unit of matter which still retains the properties of an element

Question 3

Isotopes

Answer 3

Different mass number, same atomic number

Question 4

Compound

Answer 4

A substance consisting of two or more elements in a fixed ratio

Question 5

Ionic Bonds

Answer 5

Form when two atoms very different in attraction for valence electrons come together - crystal formed

Question 6

Electronegativity

Answer 6

Tendency of an atom to attract electrons

Question 7

Isomer

Answer 7

Two organic molecules with the same number of atoms of the same elements but different structures

Question 8

Geometric Isomers

Answer 8

(cis/trans) differ in arrangement around a double bond

Question 9

Enantiomers

Answer 9

molecules which differ only in spatial arrangement of groups around a central asymmetric chrial carbon atom. They are non superimposable