Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/39

Click to flip

39 Cards in this Set

  • Front
  • Back
Macroscopic
Level that we directly observe with our senses
Microscopic
Particles that make up objects that we directly observe
Solids
Have close particles, a difinative shape, and volume
Liquids
Have particles that are farther apart, a volume, but no definate shape
Gases
Particles even more farther apart, with no definate shape or volume
Change of state
When a substance goes from one state of matter to another
Melting
Melting point
Solid to liquid
The temperature at which melting takes place
Boiling
Boiling point
Liquid to gas state
The point at which a substance begins to boil
Condensation
Gas to liquid state
Freezing
Liquid to solid state
sublimation
Solid to gas state with out ever becoming a liquid
Deposition
Goes directly from a gas to a solid state
Pure substance
definate and constant composition or make up
ex. salt or sand
element
composed of a single kind of atom
atom
smallest partcles of an element with the properties of an element
protons
subatomic particles partcles of an atom
Compound
Composed of two or more elements in a specific ratio
Mixtures
Physical combonations of pure substances that have no definate or constant composition
Homogenous mixtures or solutions
uniform in composition. same no matter who made it or where it was sampled
Heterogenous mixtures
Mixture whose compostion varies from postion to postion
SI system
worldwide measuring sysytem based on the old metric system. Interchangeable with metric system
chemical properties
enable a substance to change to a new substance and describe how a substance reacts with another substance
Physical properties
Mass, volume, color, ability to conduct electricity.
Extensive properties
depend on the amount of matter present.
Ex. Mass and volume
Intensive properties
does not depend on the amount of matter present
Ex. color and electricity
Density
equals mass (g)over volume (mL). Temp normally recorded with it
Specific gravity
Ratio of the density of a substance compared to the density of water at the same temperature
Archimedes Principal
Volume of a solid is equal to the amount of water that it displaces
Energy
The ability to do work
Metric energy
Energy of motion measured with a thermometer
Laws of conservation of energy
In ordinary chemical reactions, energey is neither created nor destroyed but converted from one form to another
Potential energy
is stored energy
Chemical bonds
Forces that holdatoms together in compounds
Heat
measures the total amount of energy a substance possesses
Proton
Positive charge. mass=1 found in the nucleus
Neutron
Neutral. mass=1. found in the nucleus
Electron
Negative. Mass=1 found outside the nucleus
Mass Number
sum of the number of protons and electrons
Atomic number
The number of protons in a given atom