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Buoyancy is how well an object can float. For example: a boat is more buoyant than a rock.

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A solution is a combination of two or more substances that is hard to separate. When two or substances are combines into a solution, they form a new substance. Examples: Salt water, koolaid, and lemonade.

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A mixture is a combination of two or more substances that is easy to separate . Examples: Salads, rocks and sand, and iron fillings and sand.

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Evaporation is when a liquid becomes a gas.

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Freezing is when you make a liquid colder. When you take heat away from the liquid, it changes into a solid.

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Condensation is when water vapor interacts with a cold surface. The water vapor will condense onto the surface, meaning the water vapor will turn back into water.  The water will form on the cold surface.

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Melting is the process when heat is added to a solid. Once heat is added, the solid begins to change into a liquid. Not all solids can melt, though. Some things like paper burn.

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An insulator is a material that does not allow heat or energy to pass through it. Insulators are used on the outside of wires.

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A conductor is an object that allows heat and energy to pass through it. Wires are made out of conductors.

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Density is how tightly packed an object is. For example: a small piece of gold would be heavier than a giant piece of Cotten candy because gold is waaaay more tightly packed. Cotten candy is mostly empty space, so it would be very light apposed to gold.

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Magnetism is when an object called a magnet attracts other metal or magnetic objects. Magnets have a magnetic field. The magnetic field is the area around a magnet where it can attract more magnets. When a magnetic object is in a magnet’s magnetic field, then the object will connect with the magnet. When a magnet is by a magnetic object, it will turn all of the atoms in the object toward it. Magnets have North and South polls. Only opposite sides of the magnet will attract each other. If the sides are the same, they will repeal each other.

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A gas is a form of matter that moves freely in the air. It also takes the shape of its container. For example: water vapor is a gas.

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A liquid is a wet form of matter that takes the shape of its container. For example: water is a liquid.

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A solid is an object that has a specific form and shape. If you drop a solid on the ground, the shape will not change.

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Weight is how much gravity is pulling down on an object. Weight can be measured by a scale. The mor heavy something is, the more gravity is pulling down on it.

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Volume is the amount of space that an object takes up.

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Mass is how much matter is in an object.

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Matter is anything that takes up space or has atoms. Matter is a gas, liquid, or solid.