Atomic Theory
____ make up everything. Fill in the blank.
What are Atoms?
In redox, what does reduction mean?
What is to gain electrons?
A piece of paper is crumbled. What kind of change is this?
What is a physical change?
London dispersion forces, hydrogen bonds, and dipole-dipole reactions are examples of what?
What are intermolecular forces?
What pH does a neutral substance have?
What is a pH of 7?
Democritus thought Atoms were indivisible and had no what?
No definite shape.
The oxidation state of oxygen is __ in compounds. Fill in the blank.
What is -2?
You eat an apple. What kind of change is this?
What is a chemical change?
What are the two types of forces?
What are Intramolecular and Intermolecular forces.
How many states of matter are there?
What is 4 (solid, liquid, gas, and plasma)?
Who came up with the solid sphere model?
Who is John Dalton?
In a compound, what is the oxidation state of florine?
What is -1?
When an ice cube melts, a chemical change has occurred. True or false?
False
What happens in an Ionic bond?
Electrons are transferred.
What charge is a cation?
What is a negative charge?
Who discovered the nucleus?
Who is Earnest Rutherford?
What is the oxidation state of O2?
What is 0?
When a new substance is formed, it's called a what?
What is a chemical change?
What happens in a double covalent bond?
4 electrons are shared.
How many hydrogen atoms are there in 2H2O?
What is 4?
What was the most recent model of the atom? Hint: this theory was made by Erwin Schrodinger.
What is the quantum/ electron cloud model?
The oxidation state of an atom in its ____ state is 0. Fill in the blank.
What is natural?
What kind of chemical change is this?
AB+CD-->BD+CA
What is double replacement?
A covalent bond happens between 2 non metals. A metallic bond happens between 2 metals. What does a metallic bond happen between?
What are a non metal and a metal?
What is the octet rule?
What is when an atom has a full outer shell of 8 electrons?