Science

• All living things are made of cells
• Cells are the basic building blocks of all living things.
• Cells can only be seen using a microscope
• Cytoplasm

  Nuclease

  Cell membrane

  Cellulose cell wall

  Mitochondrion

  Permanent vacuole

  Chloropast

  
• Nuclease: brain of cell
• Cytoplasm: where cell reactions take place
• Cell membrane: controls what enters and leaves the cell.
• Mitochondrion: powerhouse of cell
• Cell wall: strength and support of cell
• Chloropast: allows plant cells to make food by photosynthesis.
• Vacuole: allows plant cells to store water, nutrients etc
• A tissue is a group of cells working together to do something.
• An organ is a number of tissues that work together to do one of more things.
• Universe: vast area of space infinitely expanding.
• Astronomy: study of universe and everything inside
• 14 billion years ago the entire universe was inside a ball that was smaller than the size of a pinhead
• The big bang:T

  1.The entire universe is the size of a pin head and extremely hot and dense.

  2.within a second the universe grew to an unimaginable size.

  
• Moon: natural satellite of a planet, orbits a planet.
• Moons reflect the stars light.
• Asteroid: small rocky body orbiting the sun.
• Comet: ice and dust ball that orbits the sun.
• Gravity: an attractive force that acts between all objects with mass, strength of gravity depends on the mass of the object and how close it is.
• A planet must:

  Orbit a star

  Rounded due to gravity

  Clears it's own path
• Terrestrial planets: Rocky planets.
• Jovian planets: gas giants.
• Dwarf planets: eenie meenie tiny planets
• The earth revolves around the sun and rotates on it's axis.
• Solar eclipse: when the moon blocks out the sun .
• Lunar eclipse: when the earth blocks out the sun.
• The moon affects how tides are.

  
• Solution: mixture of two things chemically bound
• Mixture: mixture of two things not chemically bound.
• Solubility: ability to be dissolved in water, changes due to temperature or mixing.
• Filtration: a method of separating an insoluble solid from a liquid using a material that lets the liquid pass but not solid.
• Residue: stuff that's left

  Filtrate: what you filtered

  
• Evaporation: the changing of a liquid to a gas at the surface of a liquid.
• What if we want to keep the gas after evaporation?

  Distillation is a method of condensing water vapour back into water.
• The universal solvent is water
• Paper chromatography: method of separating mixtures of substances in solution. The solvent in which the substances are dissolved is passed along a length of paper and the dissolved substances separate out on the paper.
• Toxic: substances can cause death if swallowed, breathed in it absorbed through the skin.