IPC DCA Review Day 3

1. one stick on a stick diagram represents __ shared valence electrons when showing bonding
4. argon has ___ electrons
7. the color on the visible light spectrum with the most energy
11. a digital scale in the lab measures __
12. the larger number at the bottom of a periodic table tile is called the __ mass
15. when there is an __in the lab, first thing you do is TELL THE TEACHER!
17. the radius of an atom gets __ as you move down a group because the number or orbitals for electrons gets larger
19. argon has _____ valence electrons
21. a graduated cylinder in the lab measures __
22. argon has twenty-two___
23. when reading a graduated cylinder, you always read the number at the bottom of the curve, the ____
24. the family that always reacts with alkali metals
26. the __ metals are the most reactive family

2. the __ rule says that all elements (except hydrogen) want 8 valence electrons, that’s why bonding occurs!
3. a general section of the periodic table that can have properties of metals (like luster) and non-metals (like being brittle)
5. the smaller number at the top of a periodic table tile is called the atomic __
6. broken __ is the number one cause of lab injuries in the chemistry lab
8. the noble gases are ___, which means they NEVER bond with anything! They are non-reactive
9. the 2,8,8 rule tells us how many electrons go on each ring of a __ model
10. look on the board, the blue line is the length of fifty point __ inches
13. the electrons that are only on the outer orbital are called __ electrons
14. the fire extinguisher is for when the fire is large and you can’t get close, the FIRST thing you have to do to use it is pull the ___ so that you can push the two parts of the handle together
16. Neon (Ne) has ____ protons
18. look on he board, what type of measuring device is being shown?
20. when an electron goes back down to its __ state after being heated, it emits a photon of light
25. part of lab safety equipment that is use to protect your eyes