Atomic Structure
These two subatomic particles are found in the nucleus
Protons & Neutrons
Horizontal rows are called ______, and they tell you the number of rings
Periods
A substance made of only one type of atom (e.g., Au or O2).
Element
In the "City Girls" acronym, what does the "Y" stand for?
Yielding a Gas/Bubbles
What is the formula for Density?
mass/volume
This particle has a negative charge and "orbits" the nucleus
Electron
Vertical columns are called ______, and they tell you valence electrons.
Groups
Two or more different atoms chemically bonded together (e.g., NaCl).
Compound
If two liquids mix and form a solid "powder," what is that solid called?
Precipitate
If a rock has a mass of 10g and a volume of 2mL, what is its density?
5g/mL
This is the formula for finding the number of Neutrons
Mass - Atomic Number
This Group is the most reactive group on the table.
Group 1 / Alkali Metals)
How many different elements are in C6H12O6?
3
Is wood burning a Physical or Chemical change?
Chemical
An object with a density of 1.2 g/mL will (Sink or Float) in water?
sink
If an atom has 8 Protons, 8 Neutrons, and 8 Electrons, what is its Mass Number?
16
This Group is "Noble" because it has 8 valence electrons and is stable
Group 18
Is Fe + S a compound or a mixture? Why?
Mixture; + sign means not bonded
A substance with a pH of 12 is considered a ______.
Base
If 20g of Reactant A + 20g of Reactant B react, how much Product is made?
40g
Draw a Bohr model for Boron (Atomic #5) on your board
2 electrons inner, 3 outer
Elements that touch the "Staircase" and have properties of both metals and non-metals
Metalloids
What is the difference between Co and CO?
Element vs. Compound / Cobalt vs. Carbon Monoxide
Identify 3 pieces of "City Girl" evidence you see when baking soda and vinegar mix.
Gas/Bubbles, Temp Change/Cold, Unexpected Smell
Explain why a burnt log weighs less than the original wood.
It’s an open system; mass escaped as gas/smoke