Definitions A Click for each heading then for the answer Want an “A” Here’s the place to start.

Alloy is a mixture of metals e.g. bronze is a mixture of copper and tin. 3

Alloys =4 to know Bronze = –Copper and Tin Brass = –Copper and Zinc Solder = –Lead and Tin Steel = –Iron and Carbon

Acid has pH less than 7 turns blue litmus paper RED sour taste

Area = length X width cm 2 L W

Atom smallest part of an element that has the properties of the element.

Atomic Number The number of protons in an atom (of an element)

A.C. Alternating Current Electricity that changes direction 50 times a second (50 Hz)

Aerobic Respiration Using oxygen to release energy from food in all cells

Acceleration = change in velocity time taken Units = m/s 2

Anther makes pollen in a flower (male part)

Antagonistic Muscles pairs of muscles that pull a bone in opposite directions e.g. biceps and triceps

Asexual Reproduction Reproduction using just one parent producing identical offspring (young) e.g. cuttings or runners in plants

Atmospheric Pressure The weight of the atmosphere (air) pressing down on earth. Gets smaller as you climb higher Measured by BAROMETER

Do I know it?? Alloy 4 examples of alloys Acid Area Atom Atomic Number A.C. Aerobic Respiration Acceleration Anther Antagonistic Muscles Asexual Reproduction Atmospheric Pressure