Show:
atoms, molecules, and crystals
Atomic theories
The periodic table
compounds
mixtures and solutions
100

What are the 3 most basic things that make up the universe?

1. matter

2. energy

3. intelligence

100

Whose theory was named plum pudding?

JJ Thomson

100

true or false: Majority of the periodic table is made up of metals 

true!

100

true or false: compounds are pure substances

true!

100

true or false: a chemical reaction occurs to produce a mixture

false, mixtures are formed when no chemical reaction occurs 

200

What are the 3 subatomic particles and their charges?

1. Neutron - neutral charge 

2. protons - positive charge

3. electrons - negative charge 

200

What is the name of the theory that proposes electrons orbit the nucleus as the planets orbit the Sun?

The Bohr Model

200

How is the periodic table arranged?

based on atomic weight!
200

the electrical attractions that hold atoms together are between what 2 subatomic particles?

protons and electrons

200
the word "solutions" is another word for what?

another name for homogenous mixtures

300

true or false: pure metals are molecules 

False! pure metals are crystals

300

Why was Chadwick's discovery important?

Because the mass of the atom was not adding up without the discovery of the nucleus 

300

What are the 4 components of each element's 'cell' or box on the periodic table?

atomic number, chemical symbol, element name, and atomic mass

300

What are compounds?

when atoms of 2 or more different elements are chemically bonded together
300

Water is the most common what?

solvent!

400

How are crystal structures organized?

In a repeating grid structure or array
400

What were John Dalton's 3 propositions?

1. atoms combined to whole number ratios

2. atoms cannot be created or destroyed 

3. every atom of a given element is identical 

400
For every element, the neutron count in the nucleus can vary. What are these called?
Isotopes!
400

What is the difference between a subscript inside the parenthesis versus a subscript outside the parenthesis?

a subscript inside the parenthesis indicates the number of atoms of the element while a subscript outside the parenthesis indicates a multiplier for every atom inside the parenthesis

400

what is the substance being poured into another called?

a solute!

500

What are the 2 types of visuals used for molecules and what information do they provide? 

"Space filling" models show how close the center of the atoms are to each other and "ball and stick" models give more information on how the atoms are bonded together 

500

What were Rutherford's 4 findings? 

1. discovery of the nucleus

2. most of the mass of an atom comes from the nucleus 

3. the electrons surround the nucleus 

4. most of the atom is empty space 

500

what are the 7 metalloids?

Boron (B), Silicon (Si), Germanium (Ge), Arsenic (As), Antimony (Sb), and Tellurium (Te), and Polonium (Po)
500

What is the ratio and element names for this chemical formula, (NH4)2SO4?

2:8:1:4, nitrogen:hydrogen:sulfur:oxygen

500

What is the difference between the heterogeneous and homogeneous mixtures?

heterogeneous mixtures are when you can see at least two different substances in the mixture while homogeneous mixtures are when a substance is completely uniform