Atoms! What is an atom? Please write your answer in a complete sentence or two.
(almost) Everything is made of atoms! Sugar
Even You and Every Other Living Thing are Made up of Atoms. Matter: anything that has mass and takes up space. Keratin is a protein that is made of matter. Everything except energy is made up of matter
Atoms are small An atom is the smallest piece of matter that is stable under normal conditions. All matter is made up of atoms
How small? …and 1 cell is made up of about 100,000,000,000,000 atoms 1 human is made up of about 100,000,000,000,000 cells!
Atoms are Ridiculously Small A MILLION atoms in a straight line would be as thick as a single human hair!!!
Good thing Science has Powerful Microscopes! Each bright spot is a single atom
Elements: substances made up of only 1 type of atoms An element is a substance made up of only 1 type of atom. Only silver atoms in here!
Water is a compound made of oxygen and hydrogen atoms. Compounds Compounds are substances made of more than one type of atom, joined together Water is a compound made of oxygen and hydrogen atoms.
Different Elements = Different Atoms Atoms of different elements are different from one another because they have different numbers of protons, neutrons, and electrons.
Molecules A molecule is the smallest piece of a compound. Wally the Water Molecule says: “If I get broken down any farther, I won’t be water anymore… I’d just be a mixture of hydrogen and oxygen!” Wally
Parts of an atom: Label the diagram Atoms contain 2 parts: The atomic nucleus contains protons and neutrons Electrons fly around the nucleus near the speed of light
What Atoms are made of Atoms are made of 3 parts. Protons are found in the atomic nucleus. They have a positive electrical charge. Neutrons are also found in the atomic nucleus. They have no charge. Electrons are found outside of the nucleus. They have a negative charge.
Homework: “Matter,” “Elements,” “Atoms” pp. 31-32. SR p. 34 #2