Periodic Table
The periodic table is order in terms of increasing what?
Atomic Number
What charge do group 1 ions have?
+1
What are gases the trap heat in our atmosphere called?
Greenhouse gases
pH is a measure of what?
What is the 'sciencey' word for bubbles/bubbling?
Groups
Define the term 'isotopes'
Atoms of the same element with the same number of protons but different number of neutrons.
What is the third most abundant gas in our atmosphere.
Argon
Is a high pH acidic or basic conditions?
basic
For the reaction
Mg + 2 HCl -> MgCl2 + H2
What is reduced and what is oxidised?
Mg = reduced
H = oxidised
What are the horizontal rows called in the periodic table?
Periods
What is the formula on a silver ion?
What are the 'precious' metals present in a catalytic converter?
Platinum or palladium
What indicator is colourless is strong acid and alkali, but pink between pH 8.3-10?
phenolphthalein
No reaction occurs
The number of shells an element has is equal to its ...... number
Period
What is the formula of a sulfate ion?
SO42-
How do catalytic converters reduce greenhouse gases?
A catalytic converter reduces nitrogen oxides back into N2 and O2
Hydrocarbons and CO are converted into CO2
What are the observations for magnesium reacting with copper sulphate?
The solution turns from blue to colourless.
Brown solid forms.
Give the element in period 3 group 5
Phosphorus
Give the formula of aluminium carbonate
Al2(CO3)3
What effect do sulfur impurities in fuels have on the environment.
Sulfur impurities burn to form SO2.
This then dissolves in clouds to form sulfurous acid.
This falls to the ground as acid rain which lowers the pH of soils and rivers affecting farming yields and the health of aquatic habitats.
Write the chemical equation for the reaction between ethanoic acid and magnesium.
2 CH3COOH + Mg -> (CH3COO)2Mg + H2
For the reaction ZnSO4 + Ca -> CaSO4 + Zn
what is the reducing agent and why?
Calcium, it gives electrons to the zinc so the zinc gets reduced