Vocabulary
When a liquid turns into a gas.
What is a Boiling Point?
_H₂ + _O₂ → _H₂O
2H₂ + 2O₂ → 2H₂O
or
2, 2, 2
A change in a substance's state of matter.
What is a Physical Change?
Why does the chemical symbol not always match?
All chemical symbols originate from the romance languages. (Latin, German, etc.)
Two or more different elements.
What is a Compound?
_N₂ + _H₂ → _NH₃
N₂ + 3H₂ → 2NH₃
or
1, 3, 2
A change in a substance's size and shape.
What is a Physical Change?
What is the first element of the Periodic Table?
Hydrogen. (H)
A substance that dissolves easily.
A soluble substance.
_Al + _O₂ → _Al₂O₃
4Al + 3O₂ → 2Al₂O₃
or
4, 3, 2
A change in a substance's atomic particles.
What is a Chemical Change?
What is atomic mass?
The total mass of protons, neutrons, and electrons.
Honey is a liquid high in...
Viscosity.
_CH₄ + _O₂ → _CO₂ + _H₂O
CH₄ + 2O₂ → CO₂ + 2H₂O
or
1, 2, 1, 2
2 examples of a Chemical Change.
Decomposition, Flammability
Flammability, Oxidization
Oxidization, Decomposition
What is the atomic number?
The number of Protons.
Proton, Neutron, and Electron.
What's the difference between a Physical Change or a Chemical Change?
A chemical change changes the chemical composition of the substance, while a physical change changes the size, shape, or state of matter of the substance.
What does the color of the periodic square symbolize?
The color shows the group that the element is in.