1 GENERAL CHEMISTRY REVIEWER

• Instrument that can be used to measure sizes.
• made up of tiny, invisible building blocks called atom
• Unit used to express the size of an atom
• Smallest unit of matter
• has mass and occupies space
• Periodic table of elements consist of:
• Has definite shape and volume. Particles are arranged in ordered manner (compressed and rigid)
• Has definite volume but depends on the shape of the container
• No definite shapes and volume
• It is observed and measured without producing a new substance.

  Physical properties of matter
• It is observed and measured with chemical reactions leading to formation of a new substance.

  Chemical properties of matter
• Liquid boils and become gas.
• Liquid boils and becomes gas.

  Boiling point
• Solid melts and becomes liquid.

  Melting point
• Ability of a substance to burn.

  Flammability
• Ability of a substance to poison or to cause harm to an organism

  Toxicity
• Properties of matter that depends on the size or the amount of matter

  Extensive
• Properties of matter that are not affected by the size or amount of matter


  Intensive
• Extensive: _____ (distance), _____ (how matter resist to motion), _____ (three-dimensional space)

  Length, Mass, Volume
• Intensive: _____ (hot or cold), _____ (liquid to gas), _____ (mass of an object per unit volume)

  Temperature, Boiling point, Density
• Ability of a material to conduct or transfer heat.

  Thermal conductivity
• Mass of an object per unit volume.

  Density
• Ability of a substance to dissolve in a given amount of liquid

  Solubility
• Material allows the flow of electric current.

  Electrical Conductivity
• Atomic or subatomic response a material to an applied magnetic field.

  Magnetic property
• One-atom substance

  Mono-atomic
• Made up of two same atom or two different atom.

  Diatomic substances
• Made up of 3 or more different atoms.

  Polyatomic substances
• Group of positive charge atoms

  Ions
• Cations

  Positive
• Anions

  Negative
• Two or more atoms combined is called:____

  molecules
• A substance with a definite chemical composition

  Pure substance
• composed of one or more substance

  mixture
• simplest form of pure substance

  element
• pure substance composed of two or more types of atom

  compound
• mixtures that are uniform throughout

  homogeneous mixture
• mixtures that are not uniform in appearance

  heterogeneous mixture
• it is a one or two letter presentation of elements.

  chemical symbol
• consists of chemical symbols of the elements present in a substance with their respective quantities

  chemical formulas