What is a chloroplast?
The science word for the length of time it takes the Earth to revolve around the sun
What is a year?
This must always be worn during chemistry practical's.
safety glasses/goggles
The exchange of this subatomic particle drives chemical reactions
electron
What is the function of red blood cells
Similar cells work together to form this structure.
What is tissue?
What is the fourth planet from the sun?
What is Mars?
This gas is produced when you add an acid to a metal.
hydrogen
Mg + 2HCl -> MgCl2 + H2
The atomic number on the periodic table is the amount of this particle in an atom.
proton
what tissue in the stomach allows it to churn?
what is muscle tissue
This specialised cell is the only type of cell in your body without a nucleus.
What are red blood cells?
Large, slow-moving sheet of ice over land
Glacier
This word describes substances like bleach, soap, toothpaste, and sodium hydroxide
base/basic/alkali
As you move down a group on the periodic table, the number of these increases.
shells/energy levels
What type of system is the heart part of?
what is double circulatory system
Root hair cells are not found on your scalp, instead they help plants do this.
Absorb water
Freeze-thaw is an example of this process which breaks down existing rocks.
(physical) Weathering
This is made when you react a group 1 metal and a group 7 non-metal.
What is salt?
e.g. Sodium + Chlorine -> Sodium chloride
The reactivity of the elements increases as you move down this group.
group 1/alkali metals
what is anaerobic respiration and why do we need it?
Bacteria and sperm cells have this structure in common.
flagellum/tail?
It is not possible to find fossils in this type of rock.
igneous rock
The equation below is an example of this common chemical reaction.
CH4 + 2O2 -> 2H2O + CO2
oxidation reaction
This non-toxic element can be commonly found at parties.
Helium
what type of energy is being transformed into kinetic energy when Mr.B runs past Mr.Roberts?
chemical energy