BRONZE = COPPER + TIN STATUES AND ORNAMENTS CARBON DIOXIDE TURNS BLUE LITMUS RED, WHICH MEANS IT IS AN ACID
THE WATER CONTAINS CALCIUM SALTS WHICH TURN INTO LIMESCALE WHEN HEATED. THIS STICKS TO THE PIPE. LIMESTONE Ca, Mg, Zn, Cu
IONIC BOND ONE ATOM TRANSFERS ELECTRONS TO ANOTHER CREATING + AND – IONS WHICH ATTRACT EACH OTHER ORANGE JUICE, VINEGAR, SOUR MILK, COLA, RAIN TOOTHPASTE, BREAD SODA, MILK OF MAGNESIA WASHING SODA
CARBONNITROGEN TO STOP THE INK SEEPING INTO THE WATER BELOW IT THE INK IS SOLUBLE IN THE WATER AND TRAVELS UP THE PAPER WITH IT.
THERE IS AN INCREASE IN THE ENERGY OF THE GAS MOLECULES AND THEY LEAVE THE SOLUTION. 16 0
CO 2 H2OH2O WATER EVAPORATION DIFFERS FROM PLACE TO PLACE
AIR IS DRAWN THROUGH THE LIMEWATER. THE LIMEWATER GOES MILKY WHITE
THE LIQUID WILL TURN BLUE COBALT CHLORIDE TO PINK
SETTLEMENT TANKS ALLOWS SOLIDS AND SUSPENDED PARTICLES TO SETTLE TO THE BOTTOM OF THE TANKS.
FILTRATION WATER IS FILTERED THROUGH BEDS OF SAND TO REMOVE SUSPENDED PARTICLES CHLORINATION CHLORINE IS ADDED TO KILL HARMFUL BACTERIA IN THE WATER FLUORIDATION PREVENTS TOOTH DECAY
WEAR PROTECTIVE GEAR WHEN DOIG CHEMISTRY EXPERIMENTS ONLY USE EQUIPMENT WHEN TOLD TO BY YOUR TEACHER.
ADD POTASSIUM METAL TO A BASIN OF WATER. THE POTASSIUM WILL FLOAT ON THE WATER AND REACT SO VIOLENTLY THAT IT WILL CATCH FIRE. A FIZZING NOISE WILL BE HEARD AS HYDROGEN GAS IS PRODUCED.
ALKALI METALS THEY REACT WITH OXYGEN TO FORM OXIDES TOUCH A PIECE OF UNIVERSAL INDICATOR PAPER AGAINST THE LEMON. COMPARE THE COLOUR TO PH CHART.
ATOMS OF THE SAME ELEMENT WHICH HAVE DIFFERENT NUMBERS OF NEUTRONS PAINTING, OILING OR GREASING OXYGEN OR WATER
ADD MORE COPPER SULPHATE AND STIR TO DISSOLVE NO MORE COPPER SULPHATE WILL DISSOLVE IN THE SOLUTION
MANGANESE DIOXIDE HYDROGEN PEROXIDE DECOMPOSING TO GIVE OXYGEN GAS CaCl 2 + H 2 O + CO 2
PLASTIC WASTE IS UNSIGHTLY IN THE ENVIRONMENT PLASTIC WASTE IS EXPENSIVE TO DISPOSE OF. CANNOT BE BROKEN DOWN BY MICRO-ORGANISMS MADE FROM RENEWABLE MATERIALS
WATER IT WOULD TURN BLUE COBALT CHLORIDE TO PINK LIMEWATER CARBON DIOXIDE FROM THE BURNING WAX TURNS IT MILKY WHITE COAL
AN ELEMENT IS A SUBSTANCE WHICH CANNOT BE BROKEN INTO ANYTHING SIMPLER BY CHEMICAL MEANS. A COMPOUND IS TWO OR MORE ELEMENTS WHICH ARE CHEMICALLY COMBINED
METALS NON-METALS
MAGNESIUM IS NOW CHEMICALLY COMBINED WITH OXYGEN FROM OXYGEN IN THE AIR MAGNESIUM OXIDE, MgO
TWO OR MORE ATOMS CHEMICALLY COMBINED COVALENT BONDING
THE FORCE OF ATTRACTION BETWEEN OPPOSITELY CHARGED IONS IN A COMPOUND IS CALLED AN IONIC BOND. SODIUM CHLORIDE
SHAKE THE WATER SAMPLE WITH SOAP FLAKES. THE HARD WATER REQUIRES A LOT OF SOAP TO PRODUCE A LATHER. CALCIUM HYDROGEN CARBONATE
SOFT. THE RESIN WILL HAVE REMOVED ALL OF THE IONS WHICH CAUSE HARDNESS. TEST THE WATER SAMPLE WITH SOAP FLAKES. IT WILL REQUIRE VERY LITTLE SOAP TO PRODUCE A LATHER.
CONDUCTS ELECTRICITY, MgO DOES NOT Mg IS MALLEABLE, MgO IS NOT DISSOLVES THE LIMESTONE ACIDS IN RAIN REACT WITH THE LIMESTONE
SAND SALT OR WATER
SOFT HARDNESS LEFT IN TEST TUBE A CHLORINATION FILTRATION HEAT ELECTRIC
TUBE A TO REMOVE OXYGEN FROM WATER TO PREVENT OXYGEN GETTING BACK INTO TUBE OXYGEN NEEDED FOR RUSTING
18
LEAVE TO COOL CRYSTALS WILL FORM FILTER THE CRYSTALS Solution of copper sulphate Crystals forming
A SCALE FROM 0 TO 14 USED TO MEASURE THE DEGREE OF ACIDITY USING A PH METER GASTRIC JUICE BLOOD
ELECTROLYSIS TO IMPROVE ITS CONDUCTIVITY
OXYGEN RELIGHTS A GLOWING SPLINT HYDROGEN BURNS WITH A LOUD POP 2 HYDROGEN AND 1 OXYGEN
HYDROGEN HYDROCHLORIC ACID
CALCIUM COPPER CALCIUM, MAGNESIUM, ZINC, COPPER WEAR GOGGLES
SULPHUR DIOXIDE CAUSES ACID RAIN
NO DEFINITE SHAPE LIQUIDS HAVE A DEFINITE VOLUME
BUNSEN BURNER/ CRUCIBLE TRIPOD STAND/ CLAY TRIANGLE
Conical flask Filter funnel Filter paper Beaker of dirty water
13 – 6 = 7 ISOTOPES
MEASURING THE VOLUME OF ACID NEEDED FOR NEUTRALISATION A SALT AND WATER ARE FORMED
REFRIDGERATION FIRE EXTINGUISHERS BURNS WITH A LOUD POP
Zn + 2HCl →ZnCl 2 + H 2
HYDROGEN PEROXIDE MANGANESE DIOXIDE
A CHEMICAL WHICH SPEEDS UP A REACTION WITHOUT BEING USED UP ITSELF. RESULT;RED LITMUS DID NOT CHANGE, BLUE LITMUS TURNED RED CONCLUSION: CARBON DIOXIDE IS AN ACID
DOES NOT FORM SUDS WITH SOAP CALCIUM HARD TO FORM SUDS WHEN WASHING BLOCKS HOT WATER PIPES BLOCKS HEATING ELEMENTS PROVIDES CALCIUM FOR BONES
DISTILLATION LIEBIG CONDENSER
B TASTE IT
COVALENT ATOMS SHARE ELECTRONS
CARBON DIOXIDE SODIUM LOSES AN ELECTRON CHLORINE GAINS AN ELECTRON ELECTROSTATIC ATTRACTION Potassium chloride
AN ALLOY IS A MIXTURE OF METALS BRASS IS USED FOR ORNAMENTAL PURPOSES, DOOR HANDLES ETC.
HYDROCHLORIC ACID CALCIUM CARBONATE
CALCIUM, MAGNESIUM, ZINC, COPPER ELECTRON (-1), PROTON (+1) ELECTRON (1/1840 AMU), PROTON (1AMU)
SAFETY GLASSES PERSPEX SHEET PAINTING, OILING, GREASING, ELECTROPLATING KEEPS OXYGEN AND WATER AWAY FROM THE METAL
A FUEL MADE FROM DECAYED ANIMALS AND PLANTS METHANE WHITE RED TURNS BLUE MgO IS A BASE
3.6 mg/ 100g water It reduces the solubility of oxygen in the water RISING TEMPERATURES WILL REDUCE THE AMOUNT OF DISSOLVED OXYGEN IN THE WATER THIS WILL REDUCE THE NUMBERS OF ANIMALS AND PLANTS LIVING IN THE OCEANS AND RIVERS.
THE NUMBER OF PROTONS IN THE NUCLEUS OF AN ATOM. ISOTOPES ARE ATOMS WHICH DIFFER ONLY BY THE NUMBER OF NEUTRONS IN THE NUCLEUS
ALKALINE EARTH METALS BECAUSE THEY HAVE EIGHT ELECTRONS ON THEIR OUTER SHELL AN IONIC BOND IS THE FORCE OF ATTRACTION BETWEEN OPPOSITELY CHARGED IONS IN A COMPOUND.
TABLE SALT AND COPPER SULPHATE THEY CONDUCT ELECTRICITY SO THAT THEY CAN BE FREE TO MOVE ABOUT AND CARRY CHARGE
LEMON JUICE, SODA WATER TOOTHPASTE, LIMEWATER PURE WATER
Water Chromatography paper Test Tube The water soaks up along the paper and carries the ink with it. As it does the different colours in the ink separate out because they travel at different speeds up the paper
THE INK FROM THE MARKER WITH A MIXTURE OF COLOURS WILL HAVE SEPARATED INTO A ITS DIFFERENT COLOURS.
CRUDE OIL THEY CANNOT BE BROKEN DOWN BY LIVING THINGS
GRADUATED CYLINDER PIPETTE OR BURETTE FLOAT ON WATER CUT EASILY WITH A KNIFE REACT VIOLENT WITH WATER
A BOND WHERE THE ELECTRONS ARE SHARED BETWEEN THE ATOMS IS CALLED A COVALENT BOND.
SODIUM CHLORIDE CRYSTALLINE SOLIDS HAVE HIGH BOILING POINTS CRYSTALLINE SOLIDS HAVE REGULAR SHAPES
NaOH SODIUM HYDROXIDE (NaOH)
LIEBIG CONDENSER X PURE WATER SALT
A CONCENTRATED SOLUTION CONTAINS A LOT OF SOLUTE DISSOLVED IN THE SOLVENT. A DILUTE SOLUTION CONTAINS A SMALL AMOUNT OF SOLUTE DISSOLVED IN SOLUTE.
60 DEGREES THE SOLUBILITY INCREASES AS THE TEMPERATURE INCREASES
IS A SUBSTANCE WHICH CANNOT BE BROKEN INTO ANYTHING SIMPLER BY CHEMICAL MEANS TWO OR MORE ELEMENTS WHICH ARE CHEMICALLY COMBINED.
We placed small pieces of universal indicator paper on a white tile and put a drop of each of the solutions being tested, in turn, on each of the test papers. We noted the colour change and find the pH from the colour chart. ORANGE JUICEVINEGAR
HCl CALCIUM CARBONATE
MORE DENSE THAN AIR NO EFFECT ON THE RED LITMUS TURNS BLUE LITMUS RED
REFRIDGERATION FIRE EXTINGUISHERS
PLACE EQUAL VOLUMES OF A & B IN TWO TEST TUBES. ADD TWO DROPS OF SOAP SOLUTION TO BOTH AND SHAKE. SEE WHICH FORMS PERMANENT SUDS. ‘A’ WONT FORM SUDS ‘B’ WILL FORM SUDS EASILY
CALCIUM IONS CALCIUM SALTS SETTLING FILTRATION CHLORINATION FLUORIDATION FILTRATION TAKES OUT ALL VISIBLE DIRT
Atoms of the same element which have different numbers of neutrons. Hydrogen peroxide and manganese dioxide Manganese dioxide
Sulphur dioxide It reacts with it causing it to wear away.
Use the same volume/strength of acid each time. CALCIUM, magnesium, zinc, copper
2, 8, 8, 1 CaCO 3 + H 2 O
To increase the conductivity of the water. Burns with a loud pop There are 2 H atoms for every O atom in water
Burette Pipette Release the acid from the burette, using the tap, into the base in the conical flask. Continue until the indicator in the conical flask changes colour. The volume of acid released can be read from the side of the burette. This is the volume required to neutralise the base.
Hydrochloric acidSodium hydroxide HCl + NaOH → NaCl + H 2 O
It moves up the paper with the water and the colours separate from each other. The spot will move with the water level and show no separation
They need a container with a lid to contain them. They do not flow
The gas will take up more space when hot The oxygen is used up. This causes the decrease. Remains Steady because no more oxygen left. Nitrogen No proper measurement markings on the bell jar.
any one from: beryllium/ magnesium/ calcium/ strontium/ barium/ radium
change of colour/ becomes flakey change of texture/ becomes softer looses strength tarnish/ rust (i) calcium chloride/ drying agent labelled/ clearly named in text (ii) boiled (de-gassed) water/ water with no air labelled/ clearly named in text oil labelled/ clearly named in text stoppers not required [no diagram/s deduct 3 or 6 marks]