Atoms
Chromotagrophy
Chemical Reactions
Endo/Exothermic
Tongue Twisters
100
What 3 particles are made up of an atom?
protons
neutrons
electrons
100
What is the paper called we used?
Chromatogram or filter paper
100
A + B --> C +D
Name what C and D are in this reaction?
C and D are products
100
State is this endothermic or exothermic?
Exothermic
100
Fred fed Ted bread, and Ted fed Fred bread.
(Can only say it once, if you practice, thats your only time)
Each groups person one shot.
200
Name the following element and how many protons will it have?
This is Neon
the proton number is the same as electons so it has 10.
200
Name 3 equipment needed for chromotagraphy?
It needs:
A solvent (water)
Beaker (to hold the solvent)
Chromatogram (filter paper)
sample dye
pencil line (to place it in that mark in the paper)
200
What are 2 indicators that a chemical reaction took place?
1. Bubbling (gas is formed)
2. Colour change
3. Change in Temperature
4. Formation of precipitate
200
State which type of process is this physical change?
It is enothermic
200
She sells seashells by the seashore, and the shells she sells are surely seashells.
(Same rules as before)
300
Where is the nucleus of an atom located and what is it made up of?
It is located in the centre of the atom, and its made up of neutron and protons.
300
Explain the method used to test chromatorphy.
Place a solvent into a container (water.)
Get a filter paper, place a pencil line at the bottom of the paper.
In the center of that line, put a small dot of the ample dye you want to test.
Place it in the solvent at the pencil line. Wait until all the dye is dissolved or it stops moving up the filter paper.
300
State what the following contains:
-ides
-ates
-hydroxides
State what elements are the compound:
Calcium carbonate
-ide = a metal and non-metal
-ates = metal, non-metal & oxygen
-hydroxides = metal with a hydrogen and oxygen
Calcium carbonate = Calcium, carbon and oxygen
300
A pack has ammoum nitrate and water. The pack has the two separated in a bag. When you squeeze it, the bags break and both mixtures mix.
The ammonium nitrate dissolves in the water and becomes cold.
Which process is these and describe the energy transfer between the reaction mixture and the surrounding.
It is an endothermic reaction.
When these two mixtures mix, the energy from the surroundings go into the reaction causes the temperature to decrease.
300
Peter Piper picked a peck of pickled peppers, and if Peter Piper picked a peck of pickled peppers, where’s the peck of pickled peppers Peter Piper picked?
400
A carbon molecule has no charge. It contains 6 protons. How many electrons does it have?
Explain how you worked it out?
A Carbon molecule has 6 electrons. This is because the electrons and protons are equal. So if they have 6 protons, then they must have 6 electrons as well.
400
For dyes (C,S,T,M) state which one(s) are unpure. Which sample dye has the least attraction to the paper? Explain how you know this?
Dye M is unpure.
Dye C has the least attraction to paper. We know this because it travels the furthest up the paper having the most attraction to water.
400
You pour magnesuim carbonate with copper nitrate in a test tube. It changes colour and heats up.
Answer:
1. State is this a chemical reaction and explain why.
2. State the product that is produced.
1. It is a chemical reaction because colour is changed and it changes temperature.
2. the product are:
Magnesium nitrate + copper carbonate
400
Endothermic and exothermic process happen in nature.
Think of one of each that happen as a chemical reaction.
Exothermic = volcanoes, they get extremely got, it reacts with the air causes temperature to increase
ect.
Endothermic = Photosynthesis, plants take in light energy to make sugar.
400
How much wood would a woodchuck chuck if a woodchuck could chuck wood, and would a woodchuck chuck as much wood as a woodchuck would if a woodchuck could chuck wood?
500
If two witches watch two watches then which witch watch which watch