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A Matter of Fact Mixtures and Pure Substances. Two Types of Matter 1. Mixtures – two or more substances that are not chemically combined with each other.

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Presentation on theme: "A Matter of Fact Mixtures and Pure Substances. Two Types of Matter 1. Mixtures – two or more substances that are not chemically combined with each other."— Presentation transcript:

1 A Matter of Fact Mixtures and Pure Substances

2 Two Types of Matter 1. Mixtures – two or more substances that are not chemically combined with each other and can be separated by physical means. Solutions – a special kind of mixture Solutions – a special kind of mixture where one substance dissolves in another. The “Best” Mixture 2. Pure Substances – made of only one kind of matter and has definite properties.

3 Can it be separated by physical means? If the answer is no, the matter is a pure substance. If the answer is no, the matter is a pure substance. An element An element Or a compound Or a compound

4 Pure Substances: Elements – simplest form of pure substance. They cannot be broken into anything else by physical or chemical means. Elements – simplest form of pure substance. They cannot be broken into anything else by physical or chemical means. Compounds – pure substances that are the unions of two or more elements. They can be broken into simpler substances by chemical means. Compounds – pure substances that are the unions of two or more elements. They can be broken into simpler substances by chemical means.

5 Elements Elements are the simplest pure substance. Elements are the simplest pure substance. The smallest particle of an element that has the properties of that element is called an atom. The smallest particle of an element that has the properties of that element is called an atom. An atom is the basic building block of matter. An atom is the basic building block of matter.

6 Compounds Compounds are also pure substances. Compounds are also pure substances. But compounds are made from more than one element. But compounds are made from more than one element. Water is a compound. Water is a compound. Water can be broken down into simpler substances – hydrogen and oxygen. Water can be broken down into simpler substances – hydrogen and oxygen.

7 Matter Is it separated by physical means? No Yes Pure SubstanceMixture Chemically Separated? Yes No Compound – two or more elements Element – cannot be broken down into other substances Molecule – Basic particle of Compounds Solution “Best” Mixture Atom – Basic building block of all matter Mixture Heterogeneous Looks like more than 1 thing Homogeneous Looks like only 1 thing


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