VCE Chemistry Unit 3 Term 2 2020

Which type of energy is not involved in a coal power station?

• Chemical

• Thermal

• Electrical

• Solar

The products formed from complete combustion of a hydrocarbon is/are

• carbon dioxide

• carbon dioxide and water

• methane and water

• carbon monoxide and water

Bioethanol is produced from

• fermentation of sugars

• the breakdown of organic waste

• fatty acids and methanol

• fatty acids and methane

The list containing only renewable sources of energy is

• ethanol, shale gas, natural gas

• shale gas, biogas, hydrogen

• ethanol, hydrogen, biodiesel

• natural gas, ethanol, coal seam gas

In galvanic cells, the anode is

• negative

• postivite

• uncharged

• the salt bridge

The following equation is an example of which reactions?
 $Cl_2(g)+2e→\ 2Cl^-(aq)$  

• oxidation

• reduction

• redox

• exothermic 

Hydrogen is a dangerous fuel because it is

• expensive

• toxic

• highly flammable

• increasing the greenhouse effect

Which of the following factors does not influence the efficiency of fuel cells

• energy loss to surroundings

• applications

• rate of reactions

• electrodes used

Which factor does not influence the rate of a chemical reaction?

• surface area of reactants

• temperature

• presence of a catalyst

• none of the above

Which one of the following changes would decrease the rate of reaction of a metal and acid?

• increasing the size of the metal

• increasing the temperature of the acid

• increasing the concentration of the acid

• adding a catalyst