QQ: 1. What is the density of a piece of wood that has a mass of 25.0 g and a volume of 29.4 cm3? 2. A block of wood 3 cm on each side has a mass of 27 g. What is the density of the block? (Hint, don’t forget to find t he volume of the wood.) 3. Find the volume that 35.2 g of carbon tetrachloride (CCl4) will occupy if it has a density of 1.60 g/mL.
Today’s Objective: I can use an object’s physical properties to classify it and determine its behavior.
What determines whether something is a solid, liquid, or a gas? Kinetic Energy: HEAT!!!!
Kinetic Theory of Matter: All particles of matter are in constant motion.
Kinetic Theory of Matter: More movement = more heat
Classifying materials by shape & volume Solid Liquid Gas *Definite shape *Shape of container *Shape of container *No definite volume *Definite volume *Definite volume
Order of energy (low to high): Solid, liquid, gas Least, more, most Heat always moves to cooler areas
Add energy (heat)
Kelvin: Scientific Scale for Measuring temperature Absolute Zero: 0 K When all movement stops
Different Scales: Water: freezes boils Fahrenheit: 32o 212o Celsius: 0o 100o 273o 373o Kelvin:
Remember: The temperature of the object does NOT change – just the unit we use to measure it does.
Complete within 2 days…sooner is better so you don’t forget. Answer every question complete and include details. If it says “explain how you know” or “why?” be sure to do so. Help your lab partners. Talk your answers over It’s okay if you aren’t positive about your answer. We are still trying to learn from the lab.
You will lose points if you leave any answers blank, don’t record data, draw pictures, or give details. You will lose points if you don’t read the information provided that may included answers. If the correct answer is in the lab report, you are expected to get the right answer.
Question: What type of matter is the unknown substance Oobleck? Research:
How are Lab Reports Graded?