Structure And Bonding Chart (Page 2 of 4) in pdf

Explain why thermosetting polymers don’t melt when heated, but

thermosoftening do.

Describe the sizes of nanoparticles in nm.

List uses of nanoparticles due to the high surface area to volume ratio.

C2.3 Atomic Structure, Analysis and Quantitative Chemistry.

  

Can you…?

Recall the masses and charges of protons, neutrons and electrons

Remember that protons + neutrons = mass number

Define the word isotope.

Recall that the relative atomic mass of an element (Ar) compares the mass of

atoms of the element with the 12C isotope. It is an average value for the

isotopes of the element.

The relative formula mass (Mr) of a compound is the sum of the relative

atomic masses of the atoms in the numbers shown in the formula.

State that the relative formula mass of a substance, in grams, is known as one

mole of that substance

Describe the benefits of using instrumental methods to detect and ID

elements and compounds

Describe how chemical analysis like paper chromatography allows us to ID

additives in food – like artificial colours.

Describe how gas chromatography linked to mass spectroscopy (GC-MS)

works and how it IDs the Mr of substances

Calculate the percentage of an element within a compound

[HT] Calculate the empirical formula of a compound from its mass or

percentages.

[HT] Calculate the masses of reactants or products from balanced symbol

equations

Calculate the percentage yield from a chemical reaction

Calculate the atom economy of a reaction

Represent a reversible reaction using a word equation

C2.4 Rates of Reactions

  

Can you…?

Look at a graph and work out the rate of reaction from products forming.

Describe the changing rate of a reaction by looking at a graph

Evaluate the advantages and disadvantages of using catalysts in industry

Can you calculate the rate of a reaction using this:

Rate of reaction = Amount of reactant used/time

Name 5 factors that would affect the rate of a reaction

Describe collision theory in terms of particles

and energy

Recall the name of the energy needed to be overcome to start a reaction

Explain how each factor would affect the rate of reaction using collision theory

State what a catalyst is and what it does

Structure And Bonding Chart Page 2

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