• Atom – smallest possible piece of something
Elements
• Elements – pure substances that cannot be broken down
• Contains only one kind of atom
• Can exist as a solid, liquid, or gas
• Molecules – particles made of more than one atom
• Have different melting points and boiling points because they vary in mass and size
o The larger the particle, the higher the boiling point
Compounds
• Made by combining elements in definite properties
• Can also exist as solids, liquids, and gases
• Ions – particles that have an electrical charge
No comments:
Post a Comment