Chemistry GCSE knowledge

Definitions

100

Define Acid

A solution that reacts with alkalis, turns litmus paper red and has a ph of less than 7

200

Define concentrated

Containing a large amount of solute dissolved in a small volume of solvent 

300

define crude oil 

A mixture of hydrocarbons formed from dead microscopic organisms by heat and pressure over millions of years 

400

Define Cracking 

A chemical reaction in which large alkane molecules are split into 2 or more smaller alkanes and alkenes 

500

Define Flame photometer

A machine used to identify metal ions in solution and to determine their concentrate 

Elements

100

C

Carbon

200

P

phosphorus

300

Mg

magnesium

400

Y

yttrium

500

Ge

Germanium

formula

100

Co₂

Carbon dioxide

200

HCl

Hydrochloric acid

300

Sodium sulfate

Na₂SO₄

400

C₆H₁₂O₆

Glucose

500

CH₃COCl

ethanoyl chloride

Elements again

100

Li

lithium

200

Ti

Titanium

300

Ar

Arsenic

400

Pb

Lead

500

Xe

Xenon

(Blank)

100

clear and prone to shattering

Glass

200

Describe Clay ceramic

Brittle, opaque, prone to shatter

300

alloy that makes steel

Zinc iron

400

Define polymer and monomer

Polymer - a long chain of monomers that are joined together

monomer - A small molecule that can join with other monomers to form a polymer

500

what does PVC stand FOR!!!!!!!!!!!!!!

Polyvinyl chloride