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Science
Pure Substances and Mixtures
Question | Answer |
---|---|
What is matter? | Anything that has mass and takes up space. |
What is Chemistry? | The study of matter and its changes. |
What are 5 key points about the particle theory?(3) | 1.All matter is made of tiny particles 2.Particles have empty space between them 3.Even though you can't see them, particles move randomly all the time |
What are 5 key points about the particle theory?(2) | 4. Particles are faster and move farther apart when heated 5.Particles attract each other so they stay together instead of moving apart |
What is a Solid? | A state of matter with a definite volume and shape. |
What is a Liquid? | A state of matter with a definite volume but no definite shape. a liquid takes the shape of its container |
What is a Gas? | a state of matter that neither has a definite volume or shape |
How Does a Solid Move, And How are the Particles Arranged? | They are packed closely together and stay in the same positions but move all the time. |
How Does a Liquid Move, And How are the Particles Arranged? | The particles are close together but they move randomly in any direction. |
How Does a Gas Move, And How are the Particles Arranged? | They are very far apart and move randomly around. They can also escape a container that isn't sealed |
What is a Pure Substance? | It is a type of matter that contains only one kind of particle. |
What are 4 examples of a pure substance? | 1. Aluminum foil 2.Sugar 3.Uranium 4.Distilled Water |
What Are Two Important Facts About Pure Substances? | 1. There are many pure substances, but only a few are found in nature. 2. Most pure substances that we encounter in our lives have been made pure by human beings. |
What is a mixture? | It is matter that contains two or more pure substances mixed together. |
What are 4 examples of a mixture? | 1.Steel 2.Batteries 3.Milk 4.Air |
Which Mixtures can be harmful to the environment? | 1. Paint 2. Batteries 3. Fluorescent light bulbs |