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What are things made of?

Discover the fascinating world of atoms and elements as scientists investigate what things are made of. Learn about the structure of atoms, the periodic table of elements, and how all known materials in the universe are composed.

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What are things made of?

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  1. What are things made of? Discuss with your groups on how to answer this question.

  2. Grab a post-it. • Rip the paper in half. • Rip the paper in half again. • Rip the paper in half again. • Rip the paper in half again. • Rip the paper in half again. • Rip the paper in half again. What do you think will eventually happen to this paper?

  3. Eventually, we would get down to something so small we that we couldn’t even see it with a microscope. • Objective: Scientists have been investigating what things are made of for a very long time and they conclude that all things are made of atoms. • What are atoms? Atoms are the basic units of matter. What is matter? ATOMS

  4. We currently believe that the atom is the basic unit of matter whichconsists of a dense nucleus surrounded by a cloud of negatively charged electrons. The nucleus contains a mix of positively charged protons and electrically neutral neutrons. • Protons are positively charged. • Neutrons are neutrally charged. • Electrons are negatively charged Structure of an Atom

  5. Draw a picture of an atom. What charge does this atom have? Neutral How do you know? It has the same amount of protons and electrons.

  6. MIND BLOWING....

  7. Objective: Elements are made of the same type of atom and are organized on the Periodic Table of Elements. • The periodic table is a chart containing information about the atoms that make up all matter. • An element is a substance made up of only one type of atom.

  8. Atoms can be organized by how many protons, electrons, and neutrons they have. • An element is a substance that is made of only one type of atom. • All of the known materials in the universe are made from elements. • There are currently 118known elements. • Elements

  9. The periodic table is organized by common properties. • There are two main groups: metals and nonmetals.

  10. The atomic number of an atom is equal to the number of protons in its nucleus. • The number of electrons surrounding the nucleus of an atom is equal to the number of protons in its nucleus. • The atomic mass is the amount of protons + neutrons. (Atomic mass – # of protons = # of neutrons)

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