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science test notes 1

test,science,1.0,2011

QuestionAnswer
What is matter? Anything that takes up space and has mass.
What is the particle theory of matter? An explination of what matter is made of and how it behaves;the particle theory states that all matter is made up of tiny particles that are always moving,that attract each other and have space between them.
What is chemistry? The study of matter and its changes.
What is a solid? A state of matter with a definite volume and a definite shape.
What is a liquid? A state of matter with a definite volume,but no definate shape;a liquid takes the shape of its container.
What is a gas? A state of matter that does not have a definite volume or a definite shape;a gas takes the shape and volume of its container.
What is a pure substance? Matter that contains one type of particle.
What is a mixture? Matter that contains more than one particle.
What is distilled water? Water that has all the non-water particles removed.Distiled water is pure water.
What is a mechanical mixture/heterogeneous? A mixture with different parts that you can see.
What is a solution/homogeneous? A mixture that looks like a pure substance.
What remains the same and what changes when a sample of matter changes state? When a sample of matter changes state, particles either move faster or slower,closer or farther,and hotter or cooler,but the particles and number of particles stay the same.
Explain the difference between a pure substance and mixture. The difference between a pure substance and mixture is that a pure substance contains only one type of particle in it,but a mixture contains two or more type of particles in it.
Explain why apple juice and tap water are mixtures, not pure substances. Apple juice an tap water are mixtures because they both have more than one type of particle in them. Apple juice has water particles,sugar particles,flavour particles,and vitamin particles.Tap water contains small amounts of minerals and other chemical
Describe the difference between the arrangement of the different particles of a mechanical mixture and the arrangement of different particals of a solution. In a solution different particles are mixed together evenly.Individual particles are too small to see,so when you look at a solution it looks like one kind of matter.In a mechanical mixture ,the particles are opposite of a solution.
Created by: rabbitman