Conversion Analysis

Answer needs to have the same Sig Figs as the given unit

255x

Density = mass/volume

mass = kg volume - l

Change In Temp Formula

T = Temperature

\Delta T=\frac{q}{mc}

Matter and Energy

Matter is anything that occupies space and has mass
- Water, Solids, Liquids

Energy unit - joules

When potential energy goes up, kinetic goes down, and vice versa

1 Cals = 1000 cals

SOLIDS

  • Crystalline Solid - atoms or molecules arranged in geomtric patterns with long range, repeating order

    • salts, diamond, etc.

      • geometric shapes reflect the geometric arrangements of their atoms

  • Amorphous Solid - Atoms or molecules do not have long-range order

    • glass, rubber, plastic

  • Solid particles vibrate in place, meaning they are have very low kinetic energy

    • lots of potential energy

LIQUIDS

  • atoms and moleculsare close but move around freely, high kinetic energy

  • have a fixed volume because molecules ar close

  • assumes the shape of container

  • not compressible, low potential energy

Boiling point of water - 212F 100C 373K

GASES

  • compressible

  • no fixed shape

  • no fixed volume

  • very high kinetic energy

  • low potential energy

Elements
- Pure substance that cannot be broken down into simpler substances

  • no chem transformation can decompose an element

Heterogenous mixture - can see all the different components of a mixture

Homogenous - Uniform in appearance throughout mixture

Physical property - substance displays but doesnt change its composition

chemical property - substance displays only through changing its composition

Reactants always ——→ products

reactants always on left, products always on right

Boiling Points

Every liquid has is its own boiling point