CHEM 48: Do Now!
These questions can be used as review questions for Test 3: Lab/Matter/Periodic Table/Atoms
What is this state of matter?
What is this phase change called?
What is NOT a characteristic of gasses?
Check all the boxes that are a pure substance.
Compounds have two types of atoms bonded together, therefore compounds are mixtures.
How many core electrons does a chlorine atom have? (Just write the number)
What is the difference between Carbon-12 and Carbon-14?
What group of elements is known to be the most reactive?
What is the atomic number for Aluminum (Al). You may use a periodic table. (Just write the number)
What kind of substance would have this GHS symbol on it?
What is NOT true about density?
The separation method that separates by particle size is...
Use a periodic table. How many protons does an oxygen atom have?
Which of these subatomic particles does not carry a charge?
What would help you most when studying for tests and precomp?