Atoms
The subatomic particle that orbits around the nucleus of an atom.
What is an electron?
This term describes a reaction that releases thermal energy, making its surroundings feel hot.
What is Exothermic?
This state of matter has particles spaced the farthest apart.
What is Gas?
This number on the periodic table tells you exactly how many protons an atom has
What is the Atomic Number?
This physical change occurs when a liquid turns into a gas at its boiling point.
What is Evaporation/Boiling?
These electrons are located in the outermost energy level of an atom
What are Valence Electrons?
A reaction that absorbs energy and causes the temperature to drop
What is Endothermic?
This is the property of matter that is a relationship between mass and volume
What is Density?
This molecule, made from hydrogen and oxygen, has a boiling point of 100°C and a freezing point of 0°C.
What is water?
Unlike a chemical change, this type of change does not create a ________
What is a new substance?
This model uses rings to show the arrangement of electrons around a nucleus
What is the Bohr Model?
The starting substances on the left side of a chemical equation.
What are Reactants?
This property describes a substance's ability to dissolve in a liquid like water.
What is solubility?
The element found in air, that trees release into the atmosphere and humans lungs need.
What is oxygen?
When a gas takes up the entire space of its container, it is demonstrating this physical property.
What is volume?
If an atom has 13 protons, it must be this specific element
What is Aluminum?
If you mix two liquids and bubbles suddenly appear, this is the specific "sign" that a chemical change occurred.
What is the formation of a gas?
If you cut a 20g/cm^3 metal block in half, this will be the density of the new pieces.
What is 20g/cm^3?
Elements in the same vertical column belong to the same ________.
What is a Group
Solid to gas, it skips the middle,
No liquid phase, it’s quite a riddle.
Dry ice does this, it’s quite a sight,
This phase change happens day or night.
What is sublimation?
You can burn a log or mix a brew,
And change the old into something new.
The scale might wiggle, the smoke might fly,
But nothing truly says goodbye!
Though shapes may shift and colors may fade,
No tiny building blocks are ever made.
Not a single one is lost or destroyed,
What are Atoms/Matter?
What is Law of Conservation?
I’m a chemical dance, a bond-breaking feat,
When the product is done, I’ve given off heat!
I don’t keep my power tucked safely inside,
I push it all out with a warm, glowing pride.
If you hold my beaker, your hands will feel warm,
As a brand new substance begins to take form.
The energy leaves, it doesn't just stay,
It flows to the air and it brightens the day!
What is an increase in temperature?
I’m not a liquid, a solid, or gas,
And I don't show up on a scale's total mass.
But give me a substance, any one you can find,
And I'll leave its old, quiet status behind!
I make solids shiver and liquids start sliding,
While gases fly off, no longer just hiding.
The more that you add, the faster they go,
From a slow, tiny wiggle to a high-speed show!
What is Thermal Energy/Temperature/Heat?
I’m not a column, I’m a horizontal street,
Where the elements sit in a row, nice and neat.
Though my neighbors might vary from metal to gas,
We share a deep secret as the numbers all pass.
If you find me on three, then the atoms you see,
Have exactly three shells for their high-energy spree.
Don’t look at the top, look to the side for the clue,
For the count of the rings is what I reveal to you!
What are Periods?
A substance that has particles vibrating in place
and
Another substance has the particles sliding past each other.
What are solids and liquids