Chemistry Chapter 2 Project

Matter is the anything that occupies space and possess mass. It is composed on many little things known as molecules. Molecules are a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction. Like it says molecules are made up of atoms. Atoms are the building blocks of matter and everything else.


A mixture is a substance made by mixing two or more things together. Mixtures are very different from substances. They can be separated again. Some examples of this are the multicolored M&Ms, Trail Mix, Sweet Tea, Mud. These all can be separated back into what they were originally. They were never changed into a new substance. Mixtures can be grouped into two groups: either heterogeneous mixtures and homogeneous mixtures. A Heterogeneous mixture is a mixture that you can see the differences in the mixture. A Homogeneous mixture is a mixture that you can't see the difference in.


A substance is matter which has a specific composition and specific properties. Every pure element is a substance. Every pure compound is a substance. Substances are different from mixtures because they can be combined chemically and can never be uncombined.


Elements are each of more than one hundred substances that cannot be chemically broken down into simpler substances and are primary constituents of matter. Each element is distinguished by its atomic number. Elements have a symbol to represent their name. Examples of these are Oxygen(O), Hydrogen(H), Neon(Ne). All symbols have one or two letters. The first letter is always capital and the second is not.


Compounds are composed of two or more elements off of the periodic table. These compounds are created by chemically combining 2 or more elements. Unlike elements, compounds are represented by formulas. Examples of these would be water (H2O), and Carbon Dioxide (CO2). In compounds there is a thing called the Law of Constant Composition. This law states that in any given chemical compound, the elements always combine in the same proportion with each other.

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