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What is matter?
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-particle that makes up every living thing and every material object
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What is a solid?
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-a form of matter that has a fixed shape
-its shape stays the same unless forced on |
What is a liquid?
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-a fluid form of matter
-it has no state of it's own -takese the shape of the container and forms a surface within it |
What is gas?
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-fluid form of matter
-no shape of its own -takes the shape of container and fiils it fully |
What is volume?
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-the quantity of space an object takes up
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What is physical change?
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-material may change its shape or state
-but keeps its identity |
What is a chemical change?
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-one type of matter changes to produce one or more different types of matter
-matter that is produced has different identity and different properties |
What is reversible change?
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-a change that can be undone (physical change)
-melting ice |
What is non-reversible change?
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-chemical change
-burning paper |
What is the particle model of matter?
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-scientific description of many different features of matter
-all matter are made of particles too small to see -the particles are always in motion -the particles have empty spaces between them -particles at a higher temperature move faster than particles at a lower temperature -each substance has its own kind of particle |