BIOCHEMISTRY

1)Biochemistry

100

Anything that occupies space and has mass

What is Matter

200

Pure substance that cannot be broken down into other substances Ex. Gold, Helium, Mercury, Lead, Silver etc.

What is an Element

300

Carbon(C) Oxygen (O) Nitrogen (N) Hydrogen (H)

What are Major elements in living things

400

Calcium (CA) Phosphorous (P) Potassium (K) Sulphur (S)

What are Trace Elements in living things

500

Substances containing two or more DIFFERENT elements chemically combined  eg. water (H₂0), Table Salt (NaCl, Glucose (C₆H₁₂O₆)

What are compounds

2)Biochemistry

100

Smallest particle in an element Consists of nucleus with protons and neutrons surrounded by swirling electrons

What is an Atom

200

Number of protons a particular element will contain ( eg all carbon atoms contain 6 protons)

What is an atomic number

300

Similar forms of the same element that have different numbers of neutrons. Ex. carbon12, carbon13, carbon 14.

What is an Isotope

400

Nucleus of an atom will break down and give off energy often used in dating materials diagnosis and treatment

What is radioactive isotope

500

When atoms share or transfer electrons to create an attraction between them

What is Chemical Bond

3)Biochemistry

100

Two or more atoms bonded together eg. O₂, H_2, H₂O

What is a molecule

200

When two or more substances interact and form one or more new substances

What is a Chemical Reaction

300

Starting Materials in a reaction

What is a reactant

400

Ending Materials in a reaction

What is a Product

500

The ratio of the average mass per atom of the naturally occurring form of an element to one-twelfth the mass of an atom of carbon-12

What is relative atomic mass (formerly atomic weight)

4)Biochemistry

100

Substances with a pH below 7; Release H+ ions in a solution

What is an acid

200

Substances with a pH above 7; release OH- ions in a solution

What is a base

300

Describes how acidic or basic a substance is; scale is 0 to 14 (Eg stomach acid has a pH of 2, Human blood has a pH of 7.4 Ammonia has a pH of 11.5)

What is a pH scale

400

Mixing of acidic solution with a basic solution to form a neutral solution

What is a neutralisation

500

A compound that helps to maintain the pH of a solution

What is a buffer

5)Biochemistry

100

Show the presence of one substance by changing colours

What is an indicator

200

The branch of science that explores the chemical processes within and related to living organisms.

What is Biochemistry

300

Do not contain both carbon and hydrogen eg. water, oxygen, NaCl

What is an inorganic molecule

400

Organic molecules made up only of carbon and hydrogen atoms

What is hydrocarbons

500

A unit of mass or weight equal to one millionth of a gram

What is a microgram (mcg or μg)