1) What is a controlled variable? a) A factor that is kept the same. b) A factor that can be changed to test something out. c) A factor that changes and is measured as a result of the experiment. 2) What is a outcome variable? a) A factor that is kept the same. b) A factor that can be changed to test something out. c) A factor that changes and is measured as a result of the experiment. 3) What is an input variable? a) A factor that is kept the same. b) A factor that can be changed to test something out. c) A factor that changes and is measured as a result of the experiment. 4) How many variables do you change in an experiment? a) 1 b) 2 c) 4 d) All 5) What do you write first before starting an experiment? a) Method b) Aim c) Results d) Conclusion 6) What is a hypothesis? a) Details of your results b) A plan of your experiment c) A prediction of what you think will happen. d) A description of your method 7) What does pH measure? a) Acidity b) Volume c) Temperature d) Weight 8) What unit measures temperature? a) Litres b) Degrees Celsius c) Metres d) Grams 9) Which unit is used for volume? a) Millilitres b) Centimetres c) Inches d) Millimetres 10) Which is a safety rule in the lab? a) Wear goggles b) Run around c) Eat food d) Ignore spills 11) What is apparatus? a) Lab equipment b) Chemical c) Measurement d) Temperature 12) What should you do if a chemical spills? a) Clean immediately and tell teacher b) Ignore it and don't tell teacher c) Taste it d) Leave the lab immediately 13) What is the correct way to measure liquid volume? a) Use a beaker b) Use a dropper c) Use a measuring cylinder d) Use a flask 14) What color is the hottest part of a Bunsen burner flame? a) Blue b) Yellow c) Red d) Orange 15) What does the skull and crossbones symbol indicate? a) Flammable b) Toxic c) Corrosive d) Explosive 16) What is the first step in lighting a Bunsen burner? a) Open the gas tap b) Spark the lighter c) Connect the bunsen to the gas tap d) Adjust the air hole 17) Which symbol indicates a flammable substance? a) Flame b) Exclamation mark c) Corrosion d) Gas cylinder 18) What is the purpose of filtering in science? a) Separate solids from liquids b) Mix chemicals c) Heat substances d) Measure volume 19) Which apparatus is used to filter a mixture? a) Filter Funnel b) Beaker c) Test tube d) Bunsen burner 20) What should you do if a Bunsen burner flame goes out? a) Relight immediately b) Turn off the gas c) Ignore it d) Wait for the teacher

Introduction to Science recap

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