Science Fundamentals of Matter Flashcards
Energy is
the ability to change
Thermal Energy is
The inherent energy of matter
The KMT is
the explanation of macroscopic behavior
KE is
The energy associated with motion
The KMT states
All matter is made up of particles which are in constant motion and have attractive forces to each other.
The amount attractive forces in a substance can
vary wildy between each substance
Solids particles are
in a rigid structure and vibrate
Liquid particles are
in clumps and flow
Gas particles are
in random form with little to no attractive force and bounce around
Solid to liquid is
Melting
Liquid to gas is
vaporizing/ boliing/evaportation
Solid to gas
is sublimating
Gas to liquid is
condensing
Liquid to solid is
freezing
gas to solid is
depositing
Endothermic is when the energy of a substance is
increasing
Exothermic is when a substances thermal energy is
decreasing
How many types of TE can change at once
1 either state or structural temperature
What are Matter and Atoms
Matter is anything with mass and volume
Atoms are the building blocks of matter
Different types of atoms are called
Elements
A molecule is
A group of 2 or more atoms bonded together
A compound is
a molecule with 2 or more different atoms/elements bonded together
A mixture is a
material made up of 2 or more substances
What are the Properties of Mixtures
- Made of More than one type of Particle
- The ratio of the different types of particles can vary
- The properties of the Mixture are a synthesis of the properties of each substance
What is a pure substance
A substance with a fixed ratio and anything made with one type of particle
Mixtures are a combination of
pure substances that not chemically joined
2 types of Mixtures are
Heterogeneous with vary in composition
Homogeneous which have the same composition
and when they are in a liquid are called solutions
All mater is composed of
tiny particles that are in motion and transfer KE when they collide
Mass is
the amount of Matter in an object
Volume is the amount of
space something takes up
Density is the amount of
Mass per unit volume
What is the Density Formula
Density = Mass/Volume
Volume is measured in mL or cm cubed
What are the 2 types of Properties
Physical and Chemical
A physical propertie is a
characteristic that can be viewed without change to the substance
Some Physical Properties are
Volume, Mass, Weight, Density, Melting/Freezing Point, Vaporizing/Condensing point, color, hardness, odor, taste, state of matter, and texture
A chemical property is a
characteristic of a substance that can only be viewed when there is change
Some examples of chemical properties are
burning, tarnishing, rusting, and decomposing
What is a physical change
Changes the form or appearance not the type of substance
4 signs of Physical changes are
the state of matter, often reversible, changes shape, no new substance is made
A chemical change is when
2 or more substance join to form new substance and are often not reversible
Some examples of chemical change are
iron rusting, and gas burning
Indicators of Chemical Change
Unexpected Color change, temperature change, precipitates (solid that appears unexpectedly) form, Gas is produced forming bubbles.
