Starter Speed What is the speed of an object traveling a distance of 25 meters in 25 seconds? What’s the known? What’s the unknown? Which formula do you.

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Presentation transcript:

Starter Speed What is the speed of an object traveling a distance of 25 meters in 25 seconds? What’s the known? What’s the unknown? Which formula do you use? Solve. What is the distance of an object traveling with a speed of 10 m/s in 2 seconds?

Atom Molecule Day 52

Matter The term matter describes all of the physical substances around us Matter is anything that has mass and takes up space The Universe is made up of matter and energy

Matter Matter is made up of atoms. An atom is the smallest whole particle of matter. Sub-Atomic particles are smaller than atoms and are the tiny particles that an atom is made of.

Atomic Model Electrons orbit the nucleus.

Atomic Structure Nucleus Protons Neutrons Electrons Orbit nucleus

Much larger and heavier than electrons Atomic Structure Protons Much larger and heavier than electrons Protons have a positive charge (+) Located in the nucleus of the atom Protons identify the element Each proton is 1 amu (atomic mass unit)

Large and heavy like protons Neutrons have no electrical charge Atomic Structure Neutrons Large and heavy like protons Neutrons have no electrical charge Located in the nucleus of the atom neutrons identify the isotope neutrons are 1 amu

very dense region consisting of protons and neutrons Atomic Structure Nucleus very dense region consisting of protons and neutrons at the center of an atom almost all of the mass of an atom is located in the nucleus

Tiny, very light particles Have a negative electrical charge (-) Atomic Structure Electrons Tiny, very light particles Have a negative electrical charge (-) Move around the outside of the nucleus Electrons identify the ion

Read Periodic Element

Atomic Number = number of protons Describing Atoms Atomic Number = number of protons In a neutral atom, the # of protons = the # of electrons Atomic Mass= the number of protons + the number of neutrons APE MAN Atomic Number = Protons = Electrons Mass = Atomic Number + Nuetrons

Find the chemical symbol. Gold Fluorine Sulfur

Find the names of these elements. Mg: N: He:

Identify the element Atomic Number of 6 = 14= 25=

Find the atomic mass H: Neon: Al:

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