Each question in this quiz is timed.
Which are the correct subatomic particles?
Proton, Neutron, Electron
Molecules, Neuton, Force
Electron, Nucleus, Proton
Neutrons have a negative charge.
Select all of the true options about electrons.
Positively charged.
Mass of 0
Found in the nucleus.
Same number of electrons as there are neutrons in an atom.
Same number of electrons as there are protons in an atom.
The atomic number shows the number of electrons.
Negatively Charged.
Mass of 1.
Found in the energy levels surrounding the nucleus.
Elements in the same group have the same number of electrons in their outermost energy levels.
Nobel gases have a full outer shell.
Nobel gases are highly reactive.
When chemicals react...
They chemically bond and orbit each other.
They chemically bond by just getting rid of excess electrons.
They chemically bond either by exchanging electrons, or by sharing them
The mass of the products should be lower than the mass of the reactants.
The body has many ways to protect the body from the effects of pathogens. What is the role of mucus in this process?
It kill the pathogen.
Traps the pathogen, preventing it from entering the body.
It harms the pathogen.
All of the above.
What is the role of white blood cells in preventing pathogens from harming us?
Can ingest pathogens within the white blood cells themselves.
Produce antibodies which attach to pathogens and destroy them.
Produce antitoxins to contract the toxins produced by pathogens.
Overheat the pathogen, killing them.
Forcing the pathogens out through the respiratory system.
Placing the pathogen within the cytoplasm of cells.
