You are watching: Which of the following is true about compounds?
A compound has at leastern two various kinds of atoms. Another way to say this is that a compound is a substance made up at least two various aspects. Oxygen, O2, is an element bereason it has actually 2 of the exact same kinds of atom. Water, H2O, is a compound bereason it has 2 various kinds of atoms -- oxygen and hydrogen.
The atoms in a compound have a solved ratio. This implies that every molecule in a compound will always be specifically the very same. A water molecule will always have one atom of hydrogen and 2 atoms of oxygen.
Compounds can be chemically broken dvery own right into less complicated substances. These substances will constantly be aspects or other, simpler compounds. For example, water deserve to be separated right into 2 elements -- hydrogen and oxygen. Notice that this is another way of thinking around the fact that compounds are made up of at least two different facets.
Compounds cannot be physically separated. Another way to say this is that compounds are joined by chemical bonds. For example, sugar water is a mixture; you can separate the sugar from the water by permitting the liquid to resolve or by putting it right into a centrifuge. Water is a compound. You cannot sepaprice the hydrogen from the oxygen without a chemical procedure to break the bond between the atoms.
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Compounds have a specific set of characteristics. Since the molecules of a compound are constantly exactly the exact same, the properties of the compound will always be precisely the same. For instance, water will certainly always freeze at zero degrees Celsius and also boil at 100 levels Celsius.
"Chemistry for Today: General, Organic and Biochemistry," sixth Edition; Spencer L. Seager et al; 2008 Oxford English Dictionary; Compound
Rachel Greenleaf has been writing and also publishing for over 15 years. Her literary work-related has showed up in publications consisting of "Harvard Resee," "Black Warrior Review" and "Barrowhead Street." She holds a Bachelor of Arts from Yale College and a Master of Fine Arts from George Makid University.