Endothermic and Exothermic
Type of reaction where energy enters the system.
Endothermic.
What is the general equation for a combustion reaction?
Combustible substance + oxygen --> heat/thermal energy
Name the three types of radioactive decay.
Alpha, beta and gamma.
What is the charge and relative mass of a proton?
Positive, 1.
What chocolate bar consists of nougat, caramel and peanuts wrapped in chocolate?
Snickers
Type of reaction where energy exits the system.
Exothermic.
What are the products when an acid reacts with a metal?
A salt and hydrogen gas.
What occurs during alpha decay?
An alpha particle, which is identical to a helium-4 atom (2 protons and 2 neutrons) is ejected from the nucleus.
What is the charge and relative mass of a neutron?
No charge, 1.
Which fruit is named after a flightless bird?
Kiwi fruit.
Respiration is an __________ reaction.
Exothermic.
What are the products when an acid reacts with a base?
A salt and water (H2O).
What occurs during beta decay?
A beta particle (identical to an electron) is ejected from the nucleus.
What is the charge and relative mass of an electron?
Negative, 1.
What country does Brie cheese originate from?
France.
Photosynthesis is an ___________ reaction.
Endothermic.
What are the products when an acid reacts with a carbonate?
A salt, water and carbon dioxide (CO2).
What occurs during gamma decay?
A gamma ray is emitted from the nucleus as the protons and neutrons rearrange.
What makes up the atomic number of an element?
The number of protons in an atom of that element.
How many herbs and spices are in the original KFC recipe?
11
What is the relationship between the reactions of respiration and photosynthesis?
Respiration is exothermic because it produces energy while photosynthesis is endothermic because it uses energy. The reactants of respiration are the products of photosynthesis and vice versa.
Give two effects combustion reactions have on the environment.
Two of the following: heats up the immediate area, produces a lot of CO2 for the amount of fuel burnt, CO2 emissions contribute to the greenhouse effect which warms the earth.
What is the relationship between alpha, beta and gamma radiation?
Gamma rays are emitted during alpha and beta decay to further stabilise the nucleus.
What makes up the atomic mass of an element?
The number of protons and neutrons in an atom of that element.
What is another name for the Queensland nut?
Macadamia.