Atomic Structure
The name of the element with the symbol H
What is Hydrogen
General form of a chemical equation
What is
Reactants -> Products
Type of disease that cannot be spread from person to person
What is non-communicable
Largest thing currently known to humans
What is the observable universe
Type of element is determined by
What is number of protons
Name of the law that states atoms cannot be created or destroyed in a chemical reaction
What is Law of Conservation of Mass
The most common type of non-cellular pathogen
What is a virus
Make up most of the Universe
What is dark matter and dark energy
Number of electrons that can fit into the second electron shell
What is 8
Factors that can influence the rate of a chemical reaction
What are temperature, surface area and concentration
When a large portion of a community is immune to a disease, making the spread of the disease from person to person unlikely
What is Herd Immunity
The stretching of a light source's waves, causing its light to shift toward the red end of the spectrum and indicating it is moving away from an observer
What is Red Shift
Difference between ions and isotopes
What is ions have gained or lost electrons, isotopes have different numbers of neutrons
Difference between endothermic and exothermic reactions
What is
Endothermic reactions store energy (in the bonds of the products) reducing the temperature of the environment
Exothermic reactions release energy increasing the temperature of the environment
Two differences between a virus and a bacteria
A virus is non-cellular and a bacteria is a cell
A virus needs to invade body cells to replicate and cause disease, a bacteria can reproduce by itself and does not need to invade cells to cause disease
Life cycle of a low-med mass star
What is Nebula -> Main sequence (average star) -> Red giant -> Planetary nebula -> White dwarf
Types of radiation in order of penetrability
What is alpha, beta and gamma
Balanced chemical equation for the combustion of methane CH4 in oxygen O2 to produce carbon dioxide and water
What is
CH4 + 2O2 -> CO2 + 2H2O
Three levels of immune response in humans
What is:
First line - physical, chemical and biological barriers
Second line - non-specific active response eg fever and inflammation
Third line - specific response B cells, T cells and antibodies
Life cycle of a massive star
What is Nebula -> Main sequence (massive star) -> Super red giant -> Supernova ->Neutron star + Black hole