States of Matter
What is a solid? Draw the particles and describe how they act.
vibrate slowly and are packed close together
What is a mixture?
A substance that has molecules and compounds mixed together.
What is the table that organises and shows all the elements.
The periodic table
What is the NAME of the atomic model that has electrons EVENLY spread throughout the atom?
Plum Pudding Model
2 signs of a chemical reaction are ....
smoke, fire, heat, light, bubbling, fizzing, smell
What is evaporation?
When a liquid becomes a gas.
What is a compound?
A substance that has many DIFFERENT elements bonded together.
What is the element on the periodic table with an atomic number of 6.
What is Carbon?
The BOHR MODEL was named after Niels Bohr. What did he discover?
Discovered electrons SIT on the ELECTRON SHELL.
Is burning a chemical reaction? (explain your answer)
What is melting?
Substance changing from a solid to liquid
Draw a picture of a the molecule H20
H - O - H
What 4 important 'bits' of information are on each periodic tile.
Atomic ______
______ _______
_______ name
______ ________
Atomic mass, atomic number, element name, element symbol
What did J.J Thomson discover in 1932?
Discovered ELECTRONS
Which is NOT a chemical change -
a) burning paper b) cooking chicken c) steaming coffee
c) steaming coffee
What is sublimation
When a SOLID goes directly to a GAS, missing the liquid state.
Is HCl a compound or a molecule?
BOTH a molecule AND a compound
How many PERIODS are there? What do they show?
1-7 Periods
Show the number of ELECTRON shells
The first person to claim things are made of 'small particles' was in 400 BC. Who was it?
Democritus
Boiling _______ is ___ a chemical change. It changes the state of matter from _______ to ___.
water / not / liquid / gas
Give an example of condensation.
(1) Hot steam from a shower, lands on a cold mirror - turns into water droplets.
(2) Cold can of drink on a hot day, the hot air lands on the can and cools, turns into water droplets.
Identify and count the atoms in the this GLUCOSE compound
C6H12O6
C = Carbon 6, H=Hydrogen 12, O=Oxygen 6
Total 24 atoms
How many groups are there, what do they show? Which groups show Valence Electrons. (1a....) what do they do?
1-18 Groups. Show how many electrons on the outer shell.
Valence electrons are 1a-8a. How many electrons on the outer shell for bonding.
Ernest Rutherford used the _________ ___________ experiment and discovered the _________________.
What are 3 examples of a physical change
(ie) Melting, freezing, tearing, folding, cutting, evaporation,