Sometimes you may wake up with a swollen, puffy face. This may happen as a result of pressure being placed on the face while sleeping. However, a swollen, puffy face can also arise from a facial injury or indicate an underlying medical condition. Facial... Read more
Matter is also different because objects can be made up of different kinds of atoms. Gold is made of one kind of atom-gold atoms. Salt is made up of two different kinds of atoms-sodium atoms and chloride atoms. Properties of Matter Remember all objects take up space and have mass. You use your sense of taste and smell to tell the difference between spinach and an orange.
For a more advanced list of resources on atoms, elements and compounds. Elements are substances that cannot be separated into simpler substances. Salt is made up of the elements sodium and chloride. Water is made up of the elements hydrogen and oxygen. The smallest particles of matter are called atoms. Remember the carrot from the other chapter.