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There are approximately 105 elements on the periodic table. Each element is listed as having a unique number of this particle.
This is the general term given to materials that are made up of two or more substances that are physically combined.
As you move down a column in the periodic table this happens to the atomic weight, density, and atomic radius.
When elements like H, O, N, Cl, B, I, F are uncombined with other elements that are found only in pairs, they are considered this.
These are the noble gases due to the fact that they do not mix with other elements.
Xe, Kr, Rn, Ne, He, Ar
Butter can be classified as this type of matter
Homogeneous mixture - It appears the same throughout but can be physically separated.
This is the general term given to materials that have a fixed chemical composition and are the same throughout
A combination of flour, cocoa, and baking soda would be classified as this type of matter
Heterogeneous Mixture - physically combined and has different properties throughout
This is the only periodic quality that decreases as you move across a row in the periodic table.
The name given to the elements (greater than 93) that have been created through transmutation
Hot chocolate can be classified as this specific type of matter
Solution - It is the same throughout
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This "stair-step" line on the periodic table is called this due to the fact that these elements have properties of both sides.
These substances can be solids, liquids, or gasses at room temperature without conducting electricity.
Elements and compounds can go through this type of reaction to create new compounds with chemical properties
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