8R1-R3
Review:
Know the difference between an inference, a prediction, a hypothesis and an observation
Know how to find the number of valence electrons from the periodic table
Know that if liquid X has a smaller density than liquid J, it will float on top.
Know what an ionic compound, a covalent compound and a metallic compound is
Know the charges and the masses of neutrons, protons and electrons
Know why an element is neutral
Know the three major regions of the periodic table (metal, metalloid and noble gas) and where to find them
Know the difference between a chemical and a physical change
Understand the relative volumes of a solid, liquid, gas (as in…the particles are close together in a solid, moving away from each other in a liquid and are far apart in a gas)
Know that the elements on the periodic table are NOT arrange in order of atomic number but the MASS NUMBER
Know that the # of protons must = # of electrons until the element bonds
Know the location of electrons, neutrons, protons and the nucleus in an atom
Know what a lewis structure shows ( # of valence electrons) and how to draw it
Know how to measure a diameter of a circle with a ruler
Know how to read a triple beam balance
Know the difference between a chemical property and a physical property
Know the difference between evaporation, freezing, condensation and sublimation
Know how to measure the volume of a liquid
Know how to balance a simple equation (like… Mg + Cl → MgCl2)
Know how to find the density of an object if you’re given the mass and the volume (D = m/v)
Know how to convert within the metric system
Know that elements in the same group tend to have the same # of valence electrons
Remember that if you see a capital letter next to a small letter, it’s one element. If you see a capital letter next to another capital letter, it’s a bonded compound
Know that in order to keep an experiment controlled, you must control the variables you are not testing!
Know what the law of conservation of mass is
Know what will increase the reaction of a chemical reaction
Review:
Know the difference between an inference, a prediction, a hypothesis and an observation
Know how to find the number of valence electrons from the periodic table
Know that if liquid X has a smaller density than liquid J, it will float on top.
Know what an ionic compound, a covalent compound and a metallic compound is
Know the charges and the masses of neutrons, protons and electrons
Know why an element is neutral
Know the three major regions of the periodic table (metal, metalloid and noble gas) and where to find them
Know the difference between a chemical and a physical change
Understand the relative volumes of a solid, liquid, gas (as in…the particles are close together in a solid, moving away from each other in a liquid and are far apart in a gas)
Know that the elements on the periodic table are NOT arrange in order of atomic number but the MASS NUMBER
Know that the # of protons must = # of electrons until the element bonds
Know the location of electrons, neutrons, protons and the nucleus in an atom
Know what a lewis structure shows ( # of valence electrons) and how to draw it
Know how to measure a diameter of a circle with a ruler
Know how to read a triple beam balance
Know the difference between a chemical property and a physical property
Know the difference between evaporation, freezing, condensation and sublimation
Know how to measure the volume of a liquid
Know how to balance a simple equation (like… Mg + Cl → MgCl2)
Know how to find the density of an object if you’re given the mass and the volume (D = m/v)
Know how to convert within the metric system
Know that elements in the same group tend to have the same # of valence electrons
Remember that if you see a capital letter next to a small letter, it’s one element. If you see a capital letter next to another capital letter, it’s a bonded compound
Know that in order to keep an experiment controlled, you must control the variables you are not testing!
Know what the law of conservation of mass is
Know what will increase the reaction of a chemical reaction