1. A pure substance consists only of one element or one compound.
A mixture consists of two or more different substances, not chemically joined together.
2. Mostly, the difference between the two types of mixtures is a matter of scale. If you can see more than one phase of matter or different regions in the sample, it is heterogeneous. If the composition of the mixture appears uniform no matter where you sample it, the mixture is homogeneous.
3.When energy is added in the form of heat, the water molecules begin to get excited and move around. As more and more heat is added, the molecules move faster and faster, causing the structure of the molecules to loosen. You see this in the form of solid ice turning to liquid water, or what we know as melting.
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Answer:
1. A pure substance consists only of one element or one compound.
A mixture consists of two or more different substances, not chemically joined together.
2. Mostly, the difference between the two types of mixtures is a matter of scale. If you can see more than one phase of matter or different regions in the sample, it is heterogeneous. If the composition of the mixture appears uniform no matter where you sample it, the mixture is homogeneous.
3.When energy is added in the form of heat, the water molecules begin to get excited and move around. As more and more heat is added, the molecules move faster and faster, causing the structure of the molecules to loosen. You see this in the form of solid ice turning to liquid water, or what we know as melting.
Explanation:
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