CHEMISTRY OCTOBER 17 2014 ATOMIC CONCEPT SUBATOMIC PARTICLES

CHEMISTRY OCTOBER 17, 2014 ATOMIC CONCEPT SUBATOMIC PARTICLES

SCIENCE STARTER • You are seated and quiet • You have 2 minutes • Do the SCIENCE STARTER

AIM • What is the mass of a proton if the electron weighs as much as a ping pong?

VOCABULARY • SUBATOMIC PARTICLES • PROTON • NEUTRON • ELECTRON

SUBATOMIC PARTICLES • smaller parts of an atom

PROTON • subatomic particle with a positive charge (+1)

NEUTRON • subatomic particle that is neutral (no charge)

ELECTRON • subatomic particle with a negative charge (-1)

LOCATION • Where are the subatomic particles located?

LOCATION (ANSWER) • The proton and neutron are located in the nucleus. • The electron is located outside of the nucleus in the electron cloud

OVERALL CHARGE OF THE NUCLEUS • What is the overall charge of the nucleus?

LABEL THE ATOM

OVERALL CHARGE OF THE NUCLEUS (ANSWER) • The overall charge of the nucleus is positive.

OVERALL CHARGE OF AN ATOM • What is the overall charge of the atom?

OVERALL CHARGE OF AN ATOM (ANSWER) • Overall, the atom is neutral

OPPOSITE CHARGES • Which subatomic particles have equal but opposite charges?

OPPOSITE CHARGES (ANSWER) • The proton and the electron have equal but opposite charges.

QUANTITY RELATIONSHIP • What is the quantity relationship between protons and electrons for an atom?

QUANTITY RELATIONSHIP (ANSWER) • There is a 1: 1 relationship. In other words, there an equal number of protons and electrons. – Example: Hydrogen atom has one proton, than hydrogen atom has one electron.

MASS OF SUBATOMIC PARTICLES -24 • Neutron = 1. 675 x 10 -24 • Proton = 1. 673 x 10 -28 • Electron = 9. 109 x 10

PROTON VS ELECTRON • How many times heavier is a proton to an electron?

PROTON VS. ELECTRON (ANSWER) • ABOUT 2000 TIMES

EXAMPLE • How heavy is a proton if the electron weighs as much as a ping pong? • Ping Pong weighs about 3 grams • Basketball weighs about 1. 25 pounds (567 grams)