Guess that element
Chemical reactions
subatomic particle knowledge
products and reactants
Random
100
N
Nitrogen
100
Iron + oxygen produces....?
Iron oxide
100
the nucleus is made up of...
protons and neutrons
100
sodium + chlorine gas --->
sodium chloride
100
This element contains 8 protons and 8 neutrons in its nucleus
OXYGEN!
200
K
Potassium
200
Write the chemical symbol formula for the reaction between zinc and oxygen
Zn + O2 --> ZnO
200
if the normal form of oxygen has a mass of 16 and an isotope of oxygen has a mass of 18, what has happened?
it is heavier and has 2 more neutrons in the nucleus
protons and electrons stay the same
200
State the reactants and products in this chemical reaction:
Mg + O --> MgO
magnesium & oxygen reactants
magnesium oxide = products
200
During this type of decay a helium particle is released
Alpha decay!
300
F
fluorine
300
calcium + water produces...
calcium hydroxide and hydrogen gas
300
if an element loses or gains electrons it becomes an _ _ _
ION
300
Sodium + water reacts to produce...?
Sodium hydroxide and hydrogen gas
300
Aluminium can stop this type of radiation
Beta
400
Pb
Lead
400
zinc + hydrochloric acid produces...
zinc chloride and hydrogen gas
400
What happens when protons and neutrons within the nucleus are unstable?
it undergoes radioactive decay to achieve a more stable configuration, emitting particles and energy in the process.
400
Silver oxide (Ag2O) breaks down when heated to produce Ag and oxygen gas.
In an industrial process, 14kg of Ag2O is heated but only 13kg of Ag is collected. What happened?
1kg of O2 escaped because this was conducted in an open system.
400
What is the element symbol for this? Write it on the board
Au
500
Ir
Iridium
500
Magnesium + sulfuric acid produces....?
Magnesium sulfate and hydrogen gas
500
Why do electrons orbit the nucleus?
electrons are negatively charged and protons are positively charged. the electromagnetic force between these opposite charges pulls electrons toward the nucleus keeping them bound to the atom.
500
PbO is heated with C to extract pure Pb. Identify the reactants and products in this chemical reaction
Pb + CO2
500
Carbon-14 can be used in ________________ on objects up to _____________
Extra points: What does it decay into and how long does it take for half the sample to decay?
radiocarbon dating in objects up to 50,000 years old.
Nitrogen, 5730 years.