The energy change is the difference between the energy of the reactants and the energy of the products.

Calorimetry is an experiment that can be used to measure the energy released from a fuel such as alcohol.

The molecular formula shows the actual number of atoms of each element in a molecule of a compound.

Combustion is an exothermic reaction where a substance reacts with oxygen.

Alcohols are a homologous series that contain the -OH functional group.

Combustion of alcohols: planning

Chemistry

In the Chemistry of Carbon unit, pupils learned about the structure and bonding of carbon, and its ability to form various compounds.

This unit covers identifying functional groups, naming and drawing structural formulae, and predicting reactions of alkanes, alkenes, alcohols, and carboxylic acids. It explains addition and condensation polymerisation and discusses natural polymers like DNA, sugars, and amino acids.

Organic chemistry

an experiment to measure the volume of acid needed to neutralise an alkali

an experiment that can be used to measure the energy released from a fuel 

an experiment to produce pure, dry salt crystals

an experiment to measure the mass of dissolved salts in a water sample

When using calorimetry to investigate whether the type of alcohol combusted affects the energy given out. The temperature rise is which type of variable?

When using calorimetry to investigate whether the type of alcohol combusted affects the energy given out, the volume of water in the calorimeter is an example of which variable?

add a heatproof mat below the alcohol burner

Which of the following are ways to reduce heat loss to the surroundings when conducting calorimetry?

time taken for the water to change temperature

Which of the following need to be measured when carrying out calorimetry to indirectly measure the energy released from a fuel?

Which is the correct balanced equation for the complete combustion of ethanol?

Order the following alcohols by chain length starting with the shortest.

What is the name of the alcohol shown in the image?

Which is the molecular formula of propanol?

Which alcohol has the formula C₄H₉OH?

What are the products from the complete combustion of butanol?

the variable that you change or select values for

the variable that you measure or observe to get your results

variables that must remain the same throughout an investigation

Match the variable to the correct definition.

Starter Quiz