Subatomic Particles & Bohr Diagrams
P: 6
E: 6
N: 6
Name the three reactants in a combustion reaction.
Fuel, oxygen and heat.
Do acids produce hydrogen ions or hydroxide ions?
Hydrogen ions
What is one way to increase the reliability of an experiment?
1. Use repeat trials
2. 3 trials minimum
3. Sample size 30 or more
Name two effects of gamma radiation.
Fatigue, vomiting, cancer, death.
Draw a correct bohr diagram of Lithium, including the electron configuration.
P: 3
E: 3
N: 4
Li: 2, 1
Name the products of a combustion reaction.
Carbon dioxide, water vapour and energy.
Name an property of an acid.
Tastes sour, reacts with bases, reacts with metals, changes litmus paper to red, corrosive, conducts electricity.
Write a hypothesis for:
Independent Variable - Amount of water (mL)
Dependent Variable - Plant growth (cm)
If we increase the amount of water then the plant growth will change.
Write the symbol for alpha, beta and gamma radiation.
α
β
γ
Name the atomic mass of the isotope, Nitrogen-17.
Atomic mass is 17.
Name the limiting reagents in a combustion reaction (once used up, the reaction stops).
Oxygen, fuel and heat.
Name a property of a base.
Tastes bitter, feels soapy to the touch, reacts with acids, changes litmus paper to blue, corrosive, conducts electricity.
Name two safety measures a student can implement for dealing with an acid reaction. Identify the two hazards.
Measure - wear gloves and safety glasses.
Define radioisotope.
Radioisotopes are atoms with unstable nuclei that release radiation through nuclear decay to form a stable nucleus.
Work out the protons, neutrons and electrons of Oxygen-20.
P: 8
E: 8
N: 12
Give a non-example of a combustion reaction.
Cooling food, electric cars, rusting, photosynthesis, etc.
Name the pH range of an acid. Give an example of a substance within this range.
Less than 7.
Battery, stomach acid, lemons, soda, tomato, coffee.
The independent variable is numerical, not categorical.
What substance blocks gamma radiation?
Thick concrete and lead.
Draw a bohr diagram of Carbon-14, including the electron configuration.
P: 6
E: 6
N: 8
Carbon-14: 2, 4
Identify the combustion reaction:
a) Burning wood on a campfire.
b) Mixing an acid and a base to form a neutral solution.
Fill in the blanks of the metal-carbonate reaction.
Acid + metal _____________ -> salt + c________ d________ + w_____.
Metal carbonate, carbon dioxide, water.
What is the ionic charge of a cation?
Positive
How can alpha radiation be dangerous to humans?
When ingested (swallowed) or exposed to open cuts, it can cause damage to tissues.