Term
|
Definition
| has mass and takes up space |
|
|
Term
everything is made up of ________ |
|
Definition
|
|
Term
|
Definition
| pure substance that cannot be broken down into simpler substances by ordinary chemical means |
|
|
Term
| What are valence electrons? |
|
Definition
| the outermost level of electrons |
|
|
Term
| Hydrogen, Carbon, Li, P, and Chlorine are all examples of __________ |
|
Definition
|
|
Term
| How many elements are on the Periodic Table? |
|
Definition
| Over 100 elements (about 118) |
|
|
Term
| which 2 subatomic particles are in the nucleus? |
|
Definition
|
|
Term
| protons have _________ charge |
|
Definition
|
|
Term
| neutrons have ___________ charge |
|
Definition
| neutral (zero/ no charge) |
|
|
Term
| electrons have _______ charge |
|
Definition
|
|
Term
| electron are found where? |
|
Definition
| outside the nucleus in electron cloud |
|
|
Term
| Atomic Number is the number of _________ |
|
Definition
|
|
Term
| atomic mass is the number of |
|
Definition
|
|
Term
|
Definition
positive and negative charge on an atom
ex: He+2 and Ti-3 |
|
|
Term
| Electrons that are shared are in _________ electron level |
|
Definition
|
|
Term
Cl-2
Did Chlorine gain or lose electrons? and how many? |
|
Definition
|
|
Term
What is the atomic number if an atom has
25 protons
27 neutrons
26 electrons |
|
Definition
| 25 because Atomic number always is the same number as the number of protons |
|
|
