science revision Flashcards
what is an independent variable
a variable that is being investigated
what is a dependent variable
a variable that is measured
what equipment is used to measure temperature
thermometer
what equipment is used to measure the volume of a liquid
measuring cylinder
which part of the cell provides energy for the cell
mitochondria
where is the DNA stored in a cell
nucleus
what three parts are found in a plant cell but not an animal cell
chloroplast, cell wall and vacuole
in which part of a cell does photosynthesis occur
chloroplast
what are the four stages of cell organisation
cell, tissue, organ, organ system
what three subatomic particles make an atom
protons, neutrons, electrons
what is an element
substance made up of one type of atom
what is a compound
one or more different types of atoms bonded together
which number in the periodic table provides information on the number of protons in an atom
proton number
what is meant by the conservation of mass
matter cannot be created of destroyed
