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. PRESS THE RIGHT-ARROW BUTTON ON YOUR KEYBOARD TO ADVANCE THROUGH THE PRESENTATION. SPI 0807.9.1 Atoms. Notes. Atoms (Part 1): All matter is made up of atoms Matter is anything that is a solid, liquid, or gas The different types of atoms are called elements

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  1. PRESS THE RIGHT-ARROW BUTTON ON YOUR KEYBOARD TO ADVANCE THROUGH THE PRESENTATION SPI 0807.9.1 Atoms Notes • Atoms (Part 1): • All matter is made up of atoms • Matter is anything that is a solid, liquid, or gas • The different types of atoms are called elements • We once thought atoms were the smallest particles, but we • now know there are even smaller particles (sub-atomic particles) • Atoms are made of 3 sub-atomic particles… • …protons (are the blue circles) • …neutrons (are the green circles) • …electrons(are the orange circles) Here is a model of one atom

  2. Notes SPI 0807.9.1 (Atoms) • Below is a model of one beryllium atom • Notice that is has 4 (blue) protons • So the atomic number is four • Notice that it also has 4 (orange) electrons 1 Legend 3 2 =protons 1 4 3 2 =neutrons =electrons 4

  3. HINT: Look at the top/right of p286 to see how to read the periodic table. HINT: The atomic number is the number of protons!  SPI 0807.9.1 (Atoms) SPI 0807.9.9 (Per Table) Notes • What is this element’s atomic number • Write it down! • ANSWER: Atomic number is 3 because it has 3 (blue) protons 3 Li Lithium 6.9

  4. HINT: Look at the top/right of p286 to see how to read the per table SPI 0807.9.1 (Atoms) SPI 0807.9.9 (Per Table) Notes • What is this element’s chemical symbol • Write it down! • ANSWER: Chemical symbol is Li 3 Li Lithium 6.9

  5. HINT: Look at the top/right of p286 to see how to read the per table Notes SPI 0807.9.1 (Atoms) SPI 0807.9.9 (Per Table) • What is this element’s name? • Write it down! • ANSWER: Element name is lithium 3 Li Lithium 6.9

  6. HINT: Look at the top/right of p286 to see how to read the per table SPI 0807.9.1 (Atoms) SPI 0807.9.9 (Per Table) Notes • What is this element’s atomic mass. • Write it down! • ANSWER: Atomic mass is 6.9 3 Li Lithium 6.9

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