Chapter 4 Study Guide - Flashcards

Front

The positive particles of an atom are: electrons, positrons, neutrons, protons

Back

protons

Front

The central region of an atom where neutrons and protons are located is the __________________.

Back

nucleus 

Front

Particles in an atom that are neutral and have no charge are: negatrons, electrons, neutrons, protons.

Back

neutrons

Front

Who used the word "atomos" to describe the uncuttable (indivisible) atom?

Back

Democritus

Front

Who proposed that electrons move around the nucleus in specific layers, or shells?

Back

Bohr

Front

This picture best represents ___________________ atomic model.

Back

Thomson's

Front

In Dalton's Atomic Theory, all elements consist of __________ that cannot be divided.

Back

Atoms

Front

What is the number of protons that the element in this image contain?

Back

7

Front

What number indicates the nucleus? Options: 1, 2, 3, 4

Back

4

Front

How many electron shells/levels does this atom have?

Back

3