NEW
Font size
WorksheetsS2 Chemical Analysis Starter 13/03/24
Total questions: 10
Worksheet time: 14mins
Look the middle image. is it pure or impure?
pure
impure
What is the test for oxygen?
turns limewater cloudy
relights a glowing splint
bleaches damp litmus paper white
makes a squeaky pop
What is the test for carbon dioxide?
turns limewater cloudy
relights a glowing splint
bleaches damp litmus paper white
makes a squeaky pop
What is the test for chlorine?
turns limewater cloudy
relights a glowing splint
bleaches damp litmus paper white
makes a squeaky pop
What is the test for hydrogen?
turns limewater cloudy
relights a glowing splint
bleaches damp litmus paper white
makes a squeaky pop
A chemical change is different than a physical change because in a chemical change
chemicals are used
molecules do not physically touch
a new substance is formed and in a physical no new substance is formed
the change can be seen but in a physical change it cannot
You know that a chemical reaction has occurred if
there is a precipitate (new solid)
there is a color change.
there is a temperature change.
All of these answers are evidence.
Which is the correct word equation for photosynthesis?
water + glucose + oxygen ---> energy + carbon dioxide
energy + oxygen + carbon dioxide ---> water + glucose
water + carbon dioxide + energy ---> glucose + oxygen
glucose + oxygen ---> water + carbon dioxide + energy
What is chemical analysis?
The process of establishing what chemicals are present in a substance
A process that has had nothing added to it and is in its "natural" state
An instrumental analysis tool for identifying metal ions
The process of using small molecules (monomers) to make long chain molecules (polymers)
How can chlorine be tested for?
Makes a squeaky pop when a splint is placed in it
Relights a glowing splint
Bubble through limewater, turns it milky (cloudy)
Bleaches damp litmus paper white
