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1. Is H2O an element, compound or mixture?
2. Is O2 an element, compound or mixture?
3. Which has the most energy: solid, liquid or gas?
4. Name which matter states have a fixed volume.
Solid particles vibrate in place. They don't have a lot of energy. Solid particles have a rigid structure. Solids have both a fixed shape and volume. There is strong attraction between particles.
Liquid particles slide past one another. Liquids have more energy than solids, but less energy than gases. Liquids have a fixed volume, but not a fixed shape; a liquid will take the shape of its container. There is a medium attraction between particles.
Compounds contain more than one type of atom, but the atoms must be chemically combined. Compounds are formed when two or more elements are joined by a chemical reaction.
Gas particles move independently at high speeds. They have a lot of energy. Gases have no fixed shape or volume. Gases will fill any container they are in because their particles will spread apart. There is a very weak attraction between particles.
Mixtures are made up of two or more substances that are not chemically combined. MIxtures can contain compounds, elements, or compounds and elements mixed together.
4. Solid and liquid
Elements are pure substances that can contain only one type of atom. Also, an element is a pure susbstance that cannot be broken down or separated.
A liquid will take the shqpe of its container.
Gas particles move independently at high speeds.
Solids vibrate in place and have a rigid structure.
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good - review other e, c, m characteristics like how break down, ratio between different atoms & properties of whole related to parts
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