ReminderTEST IS TOMORROW!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Agenda:- Quick review (will be posted online)- GAME!!!!!

Mr. C’s Joke/ Riddle of the DayQ: Why can’t atoms be trusted

Mr. C’s Joke/ Riddle of the DayQ: Why can’t atoms be trusted

A. Because they make up everything

Chemistry: Quick Review

Scientific MethodKnow the difference between Independent

variables, Dependant variable and Controlled variables

4 Models of the atomDalton: indestructible sphere of matterThompson: Plum PuddingRutherford: Nucleus and electron cloudBohr: Nucleus with energy levels

We combine both Rutherford and Bohr

3 Subatomic particlesElectrons (negatively charged)- exist in

valence shells

Neutrons (neutrally charged)- exist in nucleus

Protons (positively charged – exist in nucleus

Atomic number= protons and electronsNeutrons = atomic mass – atomic number

Ex.How many protons, neutrons and electrons

does boron have?

Trends in the periodic tableGroups:

Periods:

Trends in the periodic tableMetals, transition metals and non-metals

Particle theory?

Particle theoryWhat is a particle:5 aspects:

All matter is made of particlesEach pure substance has its own kind of

particle different from other pure substancesParticles attract one anotherParticles are always in motionParticles at higher temperature move faster

then ones at lower temperatures (food colour experiment)

What is the difference between atoms, elements, pure substances, molecules, compounds, and mixtures?

Physical and chemical properties

Qualitative and Quantitative Properties

Density If chocolate has a density of 5g/cm3 , how heavy would a

chocolate egg the Easter bunny is trying to make with a volume of 76 cm3

DensityBilly has decided to dig to China. After an hours worth of

work he has dug roughly 100kg of dirt. If dirt has a density of 8 kg/L, how much dirt has Billy removed from the ground?

DensityWhat would be the density of a piece of lumber with the

dimensions of 0.25m x 4m x 0.08 m and has the mass of 20 kg?

FUN TIME!!!!!!

Bill Nye:Atoms:

http://www.youtube.com/watch?v=EeLL3yCea4c

Electricity:http://www.youtube.com/watch?

v=MedUMZFS7lU