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Definition
| It is everything in the world around. Must have mass and volume. |
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| It is the smallest particle of an elements that has the same properties of element. |
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| protons, neutrons and electrons. |
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| The amount of matter in an object. |
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| An element is a substance that cannot be broken down into anything simpler. |
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| How many elements are there? |
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| All matter in the world is made up of... |
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| They are tightly bound atoms that act like a single particle. |
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| A chemical combination of elements. Example is salt = NaCI. |
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| What are the properties of elements? |
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Definition
Elements is:
- one type of atom
- can be solids, liquids or gases
- Can be mixed together in the air (like oxygen)
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| What are properties of compounds are? |
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Definition
| when elements are chemically mixed together. |
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Term
| What are the two categories of energy? |
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Definition
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Definition
| The energy of a moving object |
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| Can energy be destoyed or created? |
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Definition
| No, it can only be changed. |
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Definition
| The ability to move other matter around. |
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| Kinetic energy turns into ___________ energy. |
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| What is potential energy? |
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Definition
| It is energy that is stored. |
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| What is a way to give an object potential energy? |
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Definition
| Move it upward against gravity. |
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Definition
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| How do you describe an object's speed? |
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Definition
Speed is how fast an oject's position changes with time at any given moment.
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Term
| What is the formula for an objects speed? |
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Definition
Speed = distance
_________
time |
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Term
| What is Newton's first law? |
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Definition
| An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same direction and speed unless an unblanaced force acts on it. |
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| What is Newton's Second law? |
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Definition
| Acceleration is produced when a force acts on a mass. The greater the mass the greater the amount of force needed. |
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| What is Newton's third law |
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Definition
| for every action (or force) there is an equal and opposite reaction (force) |
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