Basic Chemistry

9. is matter in which all the basic units are the same; either elements or compounds; elements important for good health.
10. are made up of minerals your body needs - table salt, water, magnesium.
12. – non-uniform distribution of particles ex. Vegetable soup.

1. is formed when atoms share one or more pairs of electrons
2. electrons are transferred from one atom to another and it causes both atoms to have a charge.
3. involve changing shape, physical state, size, temperature without changing the chemical identity.
4. uniform distribution of particles throughout ex. Tea or soft drinks.
5. contain hydrogen and oxygen; all the sources of energy in your diet – carbohydrates, fats, proteins
6. are substances that are put together but not chemically combines ex. Milk has calcium and salt.
7. one kind of atom; food processing can strip some foods of these vital elements – iron, calcium, potassium.
8. is the study of the makeup, structure, and properties of substances and the changes that occur to them.
11. occurs whenever new substances with different chemical and physical properties are formed.