Need to Know 4

Scientists

100

Discovered the electron

JJ THompson

200

Developed the modern periodic table

Mendeleev

300

Developed the three domain system

Carl Woese

400

Discovered the neutron

James Chadwick

500

Developed Natural Selection therory

Charles Darwin

Compounds

100

C₆H₁₂O₆

Glucose

200

CuSO₄

Copper sulphate

300

Ca(OH)₂

Calcium hydroxide

400

NH₄NO₃

Ammonium nitrate

500

PbCl₂

Lead chloride

Numbers

100

The radius of an atom

10-10m

200

The radius of a nucleus

10-14m

300

The speed of sound in air

330m/s

400

The range of reacttion times in a human 0.2-0.?

0.9s

500

Number of watts in a TW

1000 000 000 000

C category

100

Lens that curve inwards

Convex

200

Used to extract iron from its ore

Carbon

300

Metal that won't react with acids

Copper

400

When you get a radioactive material on you or in you

Contaminated

500

Method used to get a pure sample

Crystalisation

Energy

100

Energy transfer carried out by a slingshot

Elastic -- Kinetic

200

Energy transfer carried out by a firework rocket

Chemical to kinetic

Chemical to GPE

300

10Kg travelling at 10m/s has how much kinetic energy?

500J

400

What unit is used for spring constant?

N/m

500

What D happens to energy (usually in the form of thermal energy) whenever an energy transfer takes place?

Dissipated