Download 7th Grade Study Guide Test #1 – Jan. 28th Chapter 4.1: Introduction

7th Grade Study Guide Test #1 – Jan. 28th
Chapter 4.1: Introduction to Atoms
1. Explain and identify key discoveries from scientists that led to our current
model of the atom. (Democritus, Dalton, Thompson, Rutherford and Bohr)
2. Identify the experiments the scientists above used to support their findings
(Discharge cathode rays, gold foil experiment)
3. Determine who was responsible for:
a. Determining that atoms are indivisible
b. Atoms of the same element are exactly alike and have the same mass;
differing atoms are different; atoms cannot be created or destroyed
only rearranged; all compounds are made of atoms
c. Atoms are composed of negatively charged particles called electrons
d. Atoms have a positively charged nucleus and are mainly empty space
e. Electrons move in specific orbits around the nucleus
f. Neutrons are in the nucleus; electrons are located within a cloud area
of probability
4. The Model of the Modern Atom
a. Composed of subatomic particles: protons, neutrons, and electrons
b. Charges of the subatomic particles
c. Atomic number: what it represents and how to find it on the periodic
table
d. Mass number: what makes up the mass and how to find it on the
periodic table
e. How to find the number of: protons, neutrons & electrons
Chapter 4.2: Organizing the Elements
1. Navigate the periodic table: periods, groups, families (color
coded sections)
2. Reading an element’s square: atomic number, symbol, name,
atomic mass
a. Interpreting the number of protons, neutrons and
electrons from the square
Drawing the Bohr Model – see notes
1. Be able to correctly draw a Bohr model indicating the correct number of
protons, neutrons and electrons in the correct energy levels
Chapter 5.2: Bonding:
1. Explain what an ion is.
2. What is an ionic bond?
3. What is a covalent bond?
4. Which atoms are more likely to lose/gain electrons?
5. Which atoms are more likely to share electrons?
P=6
N=6
P=6
N=6