Chemistry Semester 1 - Need to Know

Definitions and properties of Physical and chemical changes

What happens to the mass of the wick after a candle is burned

Definitions of open, closed, and isolated systems

Be able to identify accuracy and precision

Write the Q=MCΔT and percent error equation on your cheat sheet

Draw and label a heating curve diagram and note that energy during a phase change is used to separate the particles

Know the definitions of Conduction, convection, and radiation + the obvious real world examples

Know where hurricanes get their energy from

Be able to identify which convection currents make convergent, divergent, and transfer tectonic plates

Know the relationship between heat and density in convection currents

Write down the definition of kinetic molecular theory

Know how to do thermal equilibrium (high temp + low temp)/2

Know the locations of protons, neutrons, and electrons in an atom

Write down the exact definitions of Ions and Isotopes

Know the difference and definitions of fusion and fission

Know what is happening when an electron jumps energy levels and what is happening when it drops energy levels (also write the definition of a photon if you don’t know what it is)

Know ROYGBIV

Know what Nuclear stability is and when an isotope becomes radioactive (ratios are 1 neutron: 1 proton & 1.5 neutrons: 1 proton)

Understand half life

Know what elements are fused during each stage of a stars life

Properties of metals v.s. Nonmetals

Know how to draw a dot diagram

Understand how to do electron configurations

Know the definitions and trends of Ionization energy, Electronegativity, and Atomic radius

Understand nomenclature

Know the Properties of ionic bonding, metallic bonding, and metallic bonding

Know how each type of bonding shares valence electrons (+ the difference between polar covalent and Nonpolar covalent electron sharing)

Know the definitions of Metals/alloys, composites, ceramics, and polymers (also know what specific characteristics differ between metals and alloys)

Distinguish between exothermic and endothermic reactions and provide examples.

Explain the law of conservation of mass in relation to chemical reactions.

Understand the concept of molarity and how to calculate it.

Identify common acids and bases, and their everyday uses.

Compare and contrast the properties of ionic versus covalent compounds.

Write balanced chemical equations for various reactions and explain each step in the process.

Describe the different stages of the scientific method and their application in chemistry experiments.