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A substance's chemical structure depends on the number and types of atoms in each of its molecules, as well as on how those atoms are arranged. Substances with different chemical structures have different physical and chemical properties.
When a substance is a reactant in a chemical reaction, its chemical structure changes. During the reaction, the atoms that make up the reactants are rearranged to form products. After the reaction, the products together are composed of the same atoms as the reactants, but those atoms are arranged in a different way. So, the products have different chemical structures than the reactants.
Which of the following statements are true? Select all that apply.
To identify or compare substances, scientists often study the substances' characteristic properties. A substance's characteristic properties are always the same, even if the amount of the substance changes. This is because characteristic properties depend only on the substance's chemical structure.
One characteristic property of a substance is its melting point. Melting point is the temperature at which a substance changes from solid to liquid. The melting point of a substance is higher when its molecules are more strongly attracted to one another. The strength of these attractions depends on the substance's chemical structure.
The following passage describes a person making soap through saponification.
Which of the following statements are true? Select all that apply.
Another characteristic property of a substance is its density, or mass per unit volume. Like its melting point, a substance's density is determined by its chemical structure.
Calculate the density of coconut oil.
Write your answer as a decimal.
in grams per milliliter