Atoms and molecules Flashcards
What is decomposition?
Breaking apart particle models
Ex. AB - A +B
What’s synthesis?
Combining particle models
Ex. A+B- AB
What is oxidation?
Combining particles WITH the coefficient and reactant
4Fe + 3 O2 = 2Fe 2 O3
What’s an element?
More than one of the SAME atom.
What’s a compound?
Combination of two DIFFERENT atoms
Explain the difference between a homogeneous mixture and a heterogeneous mixture.
A homogeneous mixture is a mixture where only one phase is visible while a heterogeneous mixture has multiple visible phases at once.
How do you find density?
Volume / Density
Mass divided by volume is equal to density
Someone asks, “Does this liquid have solubility?”
What do they mean?
Does the liquid have water in it?
An unknown substance has a PH of 2. What does this mean?
It is an acidic solution.
You stare at a green color created by an indicator. What kind of solution is this?
Neutral.
What does a blue color usually mean when created by an indicator or a litmus paper?
A basic solution.
What’s the phase change from solid to gas?
Sublimation.
What’s the phase change from gas to solid?
Deposition.
