Science

• when a solid is heated it has more kinetic energy for the particles to move causing it to melt
• particles in a solid are very close together
• particles in a gas have a high kinetic energy and move quickly in all directions
• particles in a gas are very far apart
• particles in a liquid are free to move around each other and are close together
• solvent?


  a liquid that can dissolve a solute
• Solution?


  the end result when a solute has dissolved in to a solvent
• solute?


  a substance that can dissolve
• dissolve?


  when the particles of a substance spread out and mix into a evenly
• Parallax error occurs when the measurement of an object's length is more or less than the true length because of your eye being positioned at an angle to the measurement markings.
• as the temperature rises the solubility increase
• diffusion is the movement of particles from an area of high concentration to an area of low conentrationy until they are evenly spread out
• the diffusion of a solid/liquid/gas particle will be faster in a gas in comparison toa liquid because the particles will collide with less particles in gas than liquid.
• to make a chromatography you have to draw a pencil line one centre meter away from the bottom of some chromatography paper (or filter paper) and put a spot of the coloured mixture is placed on the pencil line and the solvent is allowed to soak up the paper.
• what happens when you make a chromatogram is smaller particles get carried further by water and the larger one get left behind
• movement of particles from an area of high consitration to an area of low concentration is called diffusion
• gas exchange happens in the alveoli
• oxygen from air goes into the blood
• carbon dioxide is breathed out
• the mitochondrion folds into itself to create more surface area
• energy is released from glucose inside the mitochondria.
• in our cells we have mitochondria
• breathing is the process of inhaling and exhaling of gases between the cells and the environment and inviroment various raspatory structures such as the windpipe, lungs and nose.
• respiration is a chemical process that takes place in the mitochondria of the cell. the air that we inhale brings oxygen to the lungs and is carried by the blood to the cell where it helps break down the glucose to release energy
• during exercise the breathing rate increases to bring in more oxygen
• white blood cells are bigger then red blood cells
• white blood cells helps the body fight bacteria and viruses
• red blood cells carry oxygen around the body
• platelets react to bleeding from blood vessel injury by clumping, thereby initiating a blood clot.
• white blood cells are the only blood cells that have a nucleus and are found in the bloodstream
• platelets is a small colourless cell fragments
• platelets is made in the bone marrow and released into the bloodstream to help with blood clotting
• some white blood cells produce chemicals called antibodies that can kill certain pathogens.
• there are many different types of white blood cells
• red blood cells have no nucleus
• red blood cells contain a red pigment called haemoglobin which is a protein
• haemoglobin joins with oxygen to form oxyhaemoglobin and allows red blood cells to carry oxygen to all the cells in the body
• speed requires a distance and a time frame
• meters seconds m/s
• kilometres hours km/h