Carbon Cycle
Atoms
Isotopes
pH
Random
100
This process removes carbon dioxide from the atmosphere and turns it into glucose
Photosynthesis
100
This scientist proposed the plum pudding model of the atom
Thomson
100
What subatomic particle is different in isotopes of the same element
neutrons
100
In a chemical reaction, the substances you start with are called this.
reactants
100
A solution with a pH of 3 is classified as this
acid
200
A forest or ocean that absorbs more carbon than it releases is called this.
Carbon sink
200
The nucleus of an atom contains these two subatomic particles
protons and neutrons
200
This type of radiation is the most penetrating
gamma
200
According to this law, matter cannot be created or destroyed in a chemical reaction.
Law of conservation of mass
200
This type of ion is found in bases.
What is a hydroxide ion
300
The burning of fossil fuels is an example of this chemical process.
combustion reaction
300
The atomic number of an element is determined by this.
number of protons
300
This term refers to the time it takes for half the atoms in a radioactive sample to decay.
half-life
300
This type of reaction occurs when hydrochloric acid reacts with sodium hydroxide
acid base reaction or neutralisation reaction
300
pH stands for
Power of Hydrogen
400
Traditional fire practices by First Nations peoples that help reduce carbon emissions are called this.
Cultural burning
400
The arrangement of what subatomic particle determine how an atom bonds and reacts chemically.
electrons
400
What is the half life of Carbon-14
6500 years approximately
400
What are the products of a reaction between hydrochloric acid and sodium hydroxide?
Water and sodium chloride
400
Draw the electron configuration for
F
1st shell - 2
2nd shell - 7
500
Two processes that move carbon from the atomsphere to the biosphere
Photosynthesis and Cellular Respiration
500
Explain why atoms are electrically neutral even though they contain charged particles.
because they have an equal number of positively charged protons and negatively charged electrons, so the charges cancel out
500
How long will it take for 18.0 grams of Ra-226 to decay to leave a total of 2.25 grams? Ra-226 has a half-life of 1600 years
4800 years
500
Balance this chemical equation:
___Al + ___HCl → ___AlCl₃ + ___H₂
2Al + 6HCl → 2AlCl₃ + 3H₂
500
Draw an electron configuration for the ION of Mg
Extra 50 points if you can determine the charge on the ion.
1st shell - 2
2nd shell - 8
charge - +2