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level: The Particle Model

Questions and Answers List

level questions: The Particle Model

QuestionAnswer
How close are the atoms in a solid state?They are touching each other with their movenment being restricted to vibration.
How close are the atoms in a liquid state?They are close and just slid on top of each other but can move more freely than the solid.
How close are the atoms in a gas state?They are far away from one and each other can move anywhere they want.
What is a chemical change?Its when the particles rearrange to become something new. This also can change the formula. eg Water breaking down to Hydrogen and Oxygen.
What is a physical change?This is when the substance changes state with no affect to its formula. eg Melting Bromine.
How [roughly] big is an atom?10 [x10 to the power of -10]
What is an element?An element is made of 1 type of atom and is also pure.
What does pure mean?Pure means made of 1 element/compound and not mixed together.
What is a solute?A solute is when a substance has been dissolved in a solution
What is a solvent?A solvent is the substance that dissolves the solute.
What is a solution?A solution is when a solvent and solution exist in one. eg salt water. Salt is a the solute while water is the solvent.