Term
| Any object is a _________ of its parts. |
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Definition
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Term
| The mass of an object is equal to the ______________ of the mass of all its parts. |
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Definition
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Term
| Some objects (cells and atoms) have parts that are too small to be seen without ______________. Scientists use ____________ and _______________ to see these objects. |
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Definition
magnification
magnifying glasses
microscopes |
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Term
| What is the difference between a physi.cal change and a chemical change? |
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Definition
| Physical changes are things that change matter from one form to another. In a physical change, NOTHING NEW IS CREATED. In a chemical change, matter changes from one form to a new form, this process CREATES SOMETHING NEW. |
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Term
| List some evidence of a chemical change |
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Definition
Heat is produced that was not there before.
Light is produced that was not there before.
Fumes or smoke are produced.
The substance fizzes, changes color, or smells different.
A precipitate forms, a solid substance appears that was not there before.
Release of a gas like bubbles of carbon dioxide. |
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Term
| Ice melting is a type of ____________ change. |
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Definition
physical
It is still the same type matter, it has just changed phase |
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Term
| Paper being torn apart is a type of ____________ change. |
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Definition
physical
the shape and size have changed, but it is still paper |
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Term
| Mixtures- different types of matter are mixed together like Trail Mix (nuts, raisins, and M&Ms) are a ________________ change. |
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Definition
physical
They are mixed together but they still retain the same properties as before. They can be easily separated by filtering, shaking or by hand. |
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Term
| Solutions are a _____________ change. |
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Definition
physical
One substance is dissolved in another, the matter still retains its identity. EX Kool-aide in water.
They can be separated out, but not as easily. Evaproation of a liquid will separate our some solutions. |
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Term
| ______________ properties describe the way a substance may change or react to form a NEW SUBSTANCE. |
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Definition
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Term
| Flammability or the ability to burn is a _______________ change. |
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Definition
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Term
| Reactivity the response of one substance to another is a _______________ change. |
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Definition
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Term
| Rusting/tarnish or the reacting with oxygen is a ______________ change. |
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Definition
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