science revision
chemstry
group zero-noble gases
phisics
potassium chloride- ksI
ar-carbon
ionic somtimes conducts electrizity
gravitation potencial energy is both
biology
geothermal hard to find places
ae= change in thermal energy
role of the colon is to absorb the remaining water
universal donor = o-
group 7 increases as it goes up but group 1 gets more reactive as it goes down
protease is produced in the pancreas
osmosis and diffusion happen more rapidly if there's higher temperature
arteries have the thickest walls
ΔE = mcΔθ. What does the m represent?= mass
lose ions- becomes positive
group 1 will lose electrons and group 7 will gain them
noble gases are unreactive and non-flammable
biofuel use bad fertilizer but creates jobs
electricity isn't a primary energy source
antibiotics-kill and prevent growth of bacteria
period-row and group=colum
secondary energy source- electricity
A semiconductor diode allows current to flow in one direction only.
Too high a voltage and the lamp will break.
solids- the hotter a solid becomes the more they will vibrate
in liquids the hotter they are the faster they move same with gas
group 1 and 2 are metals
group 6 and 7 are non metals
when a metal and non-metal react together the metal atom loses electrons to form a positive charged ion
when non-metal atoms bond together they become a covalent bond
epidermal tissue covers the whole plant
palisades where most photosynthesis happens
xylem and phloem transport things like water mineral ions and food around the plant
the glucose produced from photosynthesis can be used to produce amino acids for protein synthesis.
Transpiration is the process of water movement through a plant and its evaporation in leafs,steams and flowers
The stomata control gas exchange in the leaf
when elements react atoms combine to form compounds
making bonds involves atoms giving away taking or sharing electrons.
a compound formed from a non-metal and metal consists of ions the metal lose electrons to become positive and non-metal gain them to form negative ions.
this is called ionic bonding examples of this include sodium chloride, magnesium chloride and calcium oxide
another way a compound is shown is with formula e.g.co2 is a compound from a chemical reaction with 1carbon atom and 2 oxygen
Electrons are negatively charged subatomic particles that are attracted to an orbit around the positively-charged nucleus of an atom.
if you put more lamps into the circuit, there is more resistance
You could increase or decrease the resistance in a circuit by using a variable resistor
a stent is a metal or plastic tube inserted into the lumen of an anatomic vessel or duct to keep the passageway open
Statins are drugs that help to lower cholesterol in the blood