Chemical properties of a substance include all of the following except..
  • its boiling point 
  • its toxicity 
  • its flammability 
  • its reactivity 
The toxicity of a substance refers to ..
  • its ability to burn ie catch on fire 
  • its ability to react quickly with other substances 
  • how its affects your health 
  • its ability to explode 
A metal like copper is said to be ductile. This means it can be ... 
  • corroded easily
  • bent into wires 
  • heat up and conduct heat
  • bent into sheets 
Which of the following is a chemical change rather than a physical change 
  • boiling water at 100 C
  • chopping up a piece of wood. 
  • cooking a cake 
  • ice carbon dioxide sublimating to gas 
Some hydrochloric acid is added to marble chips in a test tube. The students observed bubbles and fizzing. The gas is ....
  • Oxygen gas 
  • Carbon dioxide 
  • Hydrogen gas 
  • nitrogen gas 
Some hydrochloric acid is added to marble chips in a test tube. The marble chips is....
  • Lead nitrate 
  • Calcium carbonate  
  • sodium carbonate 
  • calcium oxide  
In the above reaction, to test for the gas I could ...
  • Bubble it through limewater and it will go milky 
  • do the pop test and it will burn 
  • Light a taper and it will burn brighter
  • note the colour change to yellow 
In another reaction, the student places a piece of metal into a test tube and adds an acid again. Its fizzes ..The gas produced is called...
  • nitrogen 
  • Oxygen gas
  • sulphur dioxide 
  • Hydrogen gas 
The process going from a gas to a liquid is called ...
  • evaporation 
  • melting 
  • condensation 
  • sublimation 
The only way you can be certain that a chemical reaction has occured is by? 
  • Light has been emitted 
  • a colour change has occurred 
  • bubbles appear 
  • identifying one or more new chemical products 
When some lead nitrate solution was added to Potassium Iodide in a test tube, the reaction produced a...
  • Yellow solid precipitate 
  • fizzing colourless gas 
  • increase in temperature in the test tube 
  • while cloudy precipitate 
A Precipitate forms 
  • when a gas is bubble through a liquid 
  • a lighter taper causes a gas to burn 
  • in a liquid or gas  after a reaction and causes cloudiness (caused by a solid forming) 
I heat some copper carbonate in a test tube.It goes black. This is due to the Copper carbonate reacting to form ...
  • Copper Oxide
  • carbon dioxide
  • lead oxide 
  • Copper 
Finish of the following word equation Copper carbonate + hydrochloric acid = Carbon Dioxide + copper chloride + ______.
  • water
  • Hydrogen gas 
  • copper 
  • oxygen 
The number of atoms of oxygen in Cu(NO3)2 is ...
  • 2
  • 5
  • 6
  • zero 
The correct chemical formula for calcium carbonate is ....
  • CaCO3
  • Ca2CO3
  • Na2CO3
  • CO2
a copper penny turning greenish after a few years.
sc-5 sb-6-Chemical Reactions img_no 280.jpg
  • Chemical Change
  • Physical Change
An gel ice pack getting cold after you put it in the freezer for an hour.
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  • Chemical Change
  • Physical Change
Which of the following IS a physical change?
  • Getting a haircut
  • Rusty metal
  • sour milk
  • A compound
Which of the following IS a chemical change
  • using chalk
  • water freezing
  • slicing cheese
  • digestion
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