Radioactivity
Physical & Chemical Properties and Changes
Atomic Structure
Chemical Reactions
Miscellaneous
100
Name all 3 types of radiation
alpha beta gamma
100
Aluminum is pounded into thin sheets to make aluminum foil you use in cooking. This represents this physical property.
What is malleability?
100
These 2 subatomic particles exist in the nucleus
protons and neutrons
100
The name of the solution we can use to determine if something is an acid or a base
what is an indicator
100
When a chemical reaction releases energy, we say the reaction is:
what is exothermic
200
The name of a version of an atom that has a different number of neutrons
What is an isotope
200
Mixing two clear and colourless liquids gives a bright yellow and opaque liquid, which hints at this type of change.
What is a chemical change?
200
Draw a picture of a Bohr atomic model for Helium
Answers will vary.
200
A test we can do to determine what kind of gas is present in an experiment
The pop test
200
A thermometer inside a beaker of acid + metal reacting. What happens to the temperature when this exothermic reaction takes place?
The temperature goes up
300
which type of radiation is most dangerous in terms of penetration?
gamma
300
A gas changing to a liquid is called condensation. This process is this type of change.
What is a physical change?
300
How many electrons does Na have?
11
300
A general equation for a neutralisation reaction
acid + base --> salt + water
300
When the pH is very low (less than 7) this means the solution is (acidic/basic)
acidic
400
The missing value
171
400
Burning wood at a campfire is this type of chemical property.
What is combustibility?
400
How many neutrons does sodium-23 have?
12
400
a general equation showing a metal and an acid reacting
acid + metal --> metal salt + hydrogen gas
400
pH measures the concentration of hydrogen ions in solution. A large concentration of hydrogen ions will have a (high/low) pH
low
500
an equation to show Uranium 238 emitting an alpha particle and gamma radiation
various answers
500
This is the technical term of a solid that forms during a chemical change.
What is a precipitate?
500
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The name of the scientist who described a thought experiment where a cat can be both dead and alive if we cannot make an observation of its physical state
Who is Schrodinger
500
A general equation for a carbonate and an acid
acid + carbonate --> salt + water + carbon dioxide
500
The law of conservation of mass
Mass is neither created nor destroyed in chemical reactions.