TEST 2 Chem Semester

Front

Who explained the behavior of positively charged particles (Protons) being deflected from a metal foil?

Back

Ernest Rutherford

Front

What did Rutherford conclude about the structure of the atom?

Back

an atom contains a small, dense, positively charged central region

Front

A nuclear particle that has about the same mass as a proton, but with NO electrical charge is called a/an _________.

Back

Neutron

Front

The nucleus of most atoms is composed of _______.

Back

Protons & Neutrons

Front

An Aluminum isotope consists of 13 protons, 13 electrons and 14 neutrons. Its mass number is _____?

Back

27

Front

Isotopes are atoms of the same element that have different _______.

Back

masses

Front

Element identified by the Bohr Model shown above.

Back

Argon

Front

Element with 12 electrons (not an ion)?

Back

Magnesium

Front

What is the element's name if it has 56 protons?

Back

Barium

Front

How many protons does Fluorine (F) have?

Back

9