Chemistry Flashcards
-Distinguish physical changes from chemical changes
Physical changes are changes that do not alter the identity of a substance. and Chemical change occurs when one substance is turned into another substance.
-Distinguish between Quantitative and Qualitative data
Quantitative data is numerical data.
Qualitative data is detailed, non-numerical data.
-Distinguish between Pure Substances (elements versus compounds) and Mixtures (homogeneous and heterogeneous)
pure substances cannot be physically separated while mixtures can be
A pure substance is homogeneous
And a mixture is a heterogeneous
-Kinetic Molecular Theory (KMT) - how do particles move depending on their state
gas particles are in constant motion liquids move around each other. solids vibrate in place.
-The parts of an atom (nucleus, protons, electrons, neutrons….what’s the charge of each part?)
protons are positively charged, neutrons are uncharged and electrons are negatively charged.
-What are “elementary particles?”
leptons, quarks, and gauge bosons.
What is phase change
when matter changes to from one state (solid, liquid, gas, plasma) to another.
-Rutherford Gold Foil experiment: What did he do? What did his results help explain?
established the nuclear theory of the atom
What did Thomson discover
the electron
What did Dalton discover
that matter is made of indestructible atoms
What is condensation
The process of water being vaporized from liquid to vapor
What is solidification,
the process of phase change (something being turned into a solid state.
What is sublimation,
the process of a solid becoming a gas without becoming liquid before
What is evaporation
the process that turns liquid water into gas (vapor)
