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3.1 Classification of Matter
All of this material is important to a scientist.
There are silver atoms, iron of iron atoms, and aluminum of aluminum atoms.
There is a full list of elements on the inside front cover.
Water has the same composition of H2O.
There are elements and hydrogen peroxide.
Water and hydrogen peroxide have different properties even though they have the same elements.
Pure substances can be broken down by chemical processes.
They can't be broken down through physical methods.
Ordinary table salt consists of the compound NaCl, which can be separated by chemical processes into sodium metal and chlorine gElements.
H Water, H2O, has two hydrogen atoms for one oxygen atom.
The elements are produced by the decomposition of salt.
The components of matter are elements, compounds, and mixtures.
In our daily lives, a lot of the matter consists of combinations.
The air we breathe has mostly oxygen and nitrogen in it.
The steel in buildings and railroad tracks is made from a mixture of iron, nickel, carbon, and chromium.
Coffee, tea, and ocean water are all mixed together.
The proportions of substances in a mixture can vary.
The sugar-water mixture may look the same, but the one with the higher ratio of sugar to water tastes better.
Physical processes can be used to separate water and chemical from each other.
Different coins, such as nickels, strainer, physical method of dimes, and quarters, can be separated by size.
Heterogeneity is classified as a mixture.
We can't see individual components that appear to be one state.
Air, which contains oxygen and nitrogen gases, and seawater, a solution of salt and water, are familiar examples of homogeneity.
There are two separate regions for the components.
A mixture of oil and water is heterogeneous because the oil floats on the surface of the water.
A cookie with raisins and orange juice are examples of heterogeneous combinations.
Various methods are used to separate the mixture in the chemistry laboratory.
Why is a pizza heterogeneous?
A liquid and a solid are separated by ink.
Oxygen and nitrogen make up the majority of the air we breathe.
The air we breathe depends on the depth of the dive, and the breathing mixtures used by scuba come with breathing high levels of divers.
Nitrox is a mixture of oxygen and nitrogen, but with more oxygen gas by professional, military, or other highly, and less nitrogen gas than air.
A breathing mixture is used by divers.
Oxygen and helium are used for diving to more than 200 feet.
At dive depths over 300 ft, the effort of breath shaking and a drop in body temperature can be reduced.
trimix is a breathing mixture used for dives over 400 ft.
A mixture of gasses is used.
Some are added to fill scuba tanks.
The element copper is a pure substance.
Heterogeneous mixture is a chocolate-chip cookie that does not have a uniform composition.
Oxygen and nitrogen have the same composition in nitrox, which makes them a mixture.
A salad dressing is made with oil, vinegar, and blue cheese.
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