Properties Of Matter Flashcards
What is plasma?
A “soup” of positive Nuclei surrounded by free flowing electrons , the particles have broken down and become ionized.
Ex:lightning
What is a liquid?
NO definite shape, definite volume, The particles can slide past each other, but are still packed together, the atoms/molecules can move and flow to fit a container.
More kinetic energy in the molecules
Ex:water
What is a gas?
No definite shape and volume
Most kinetic energy of the molecules. The particles are in constant motion and rarely stick together, the atoms/molecules can move and flow to fit a container.
Ex:air
Are liquid molecules packed together?
- more space than solid
- more space between molecules
- not packed tightly
What is a solid?
Definite shape and volume. The particles are in a rigid, fixed structure, the atoms/molecules DO NOT MOVE to fill a structure.
Ex:aluminum, anything solid really
Are solid molecules far out?
Molecules packed close together
Are gas molecules kind-of close together?
Roam er’y where bruh, gas molecules be crazy
Define Physical Change.
A change in matter that DOES NOT produce new materials, are “easily” reversed, can be reversed by a physical change.
Define a Change of State.
Melting/Freezing, evaporation/condensation, when materials boil, the atoms become more disordered, when materials freeze, the atoms become more ordered, the total mass remains the same during a state of change.
What is an example of Physical Change?
Melting butter, dissolving salt into water, ice melting, pounding gold into a coin, a puddle of water evaporating, crushing chalk into dust. (SAME THING, just in a different form, nothing new is created)
Define Chemical Change.
A change in matter that DOES produce new materials, not “easily” reversed, can only be reversed by a chemical change, a chemical change occurs when a NEW product is formed.
What are some examples of Chemical Change?
Burning paper, rusting iorn, burning gasolline, hard-boiling an egg, burning wood into charcoal, paint fading, plants using CO2 and H2O to form O2 and sugar, frying and egg, fruit rotting, baking a cake.
Define: Mixture
Two or more substances physically combined, or real close together.
Do the substances in a mixture change their properties?
No, the substances in a mixture keep their indivisual properties.
FILL IN THE BLANK:
Mixtures can be separated into____________ of the mixture by ________ changes.
Mixtures can be separated into INDIVIDUAL PARTS of the mixture by PHYSICAL changes.
Heterogeneous
A mixture that is NOT the same throughout.
Homogeneous
A mixture that is the same throughout, or is mixed so well its looks like one substance.
The Law of Conservation of Matter
In any chemical reaction, atoms are not created or destroyed, they just arrange to new products.
What does the The Law of Conservation of Matter say about physical change?
In a physical change, like melting ice, the total mass before melting will be equal to the total mass after melting.
What does The Law of Conservation of Matter say about chemical change?
Even if paper is burned, the total mass before burning will be equal to the total mass after burning because gasses like smoke and CO2 have mass
Signs of a Chemical Reaction:
> New products from with new properties > Gas formation > Color Change > Odor produced > Solid precipitate forms > A transfer, or release of enrgy
Reactants are on which side of the arrow
Left (Chemical reaction)
The Arrow(—>) means
“Yields”
Exothermic
A type of (chemical) reaction that produces an increase in temperature, ex: burning paper
