You know about the following:
1. The three principal phases or states of matter. You should be able to diagram the molecules of these three states of matter and discuss what you know about each state…...like does it have a definite shape or volume. You also should know that as we add heat energy to matter the molecules start to move faster (more kinetic energy) and as we take away heat energy the molecules start to move slower (less kinetic energy)
2. You need to know that matter can go through two types of change: physical and chemical. The difference between the two can best be determined by the evidence:
Evidence of physical change: The type of matter DOES NOT CHANGE but there might be Changes of state, change of shape, changes in density, volume, or mass(size), and sometimes changes in color.
Evidence of chemical change: The type of matter DOES CHANGE, there might be a formation of a gas, a precipitate, or a change in energy (endothermic-absorbs heat, feels cold exothermic-releases heat, feels hot)
3. How calculate density. Density = mass/volume Mass is always measured in grams. Volume can be measured either in mL or cubic centimeters.
4. How to calculate volume of a rectangle prism (box). This is length x width x height.
5. How to calculate the volume of an irregular shaped object like a wedding ring. a) put some water in a graduated cylinder and measure the volume b) add the object and see the new volume c) subtract the first volume from the new total volume.
6. How to find the dependent and independent variable in an experiment when the experiment is described to you in a paragraph and in a chart.
