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ES-Matter&Atoms
Unit5: Rock Cycle, Chapter 3 Glencoe
| Question | Answer |
|---|---|
| What are the three main particles in an atom? | proton, neutron, electron |
| The atomic mass is the sum of what two weights? | total mass of protons plus mass of neutrons. |
| The atomic number is the same as the number of | protons |
| What kind of bonding occurs in NaCl? | ionic |
| What kind of bonding occurs in Fe2O3? | Ionic |
| Which of the following states of matter involves a mixture? a. Solid b. Liquid c. Gas d. Plasma | Plasma |
| True or False: When metal is melted it becomes lighter. | False |
| A substance with pH 13 is an Acid or Base? | Base |
| Rainwater is an acid, neutral, or a base? | Acid |
| When salt (NaCl) is added to water does it become a: a. mixture b. plasma c. solution d. acid | Solution |
| When atoms combine they form a: a. protons b. bonds c. crystal d. element | bonds |
| What is the most abundant element in the universe? | Hydrogen |
| Behind Oxygen, what is the most abundant element in the earth's crust? | Silicon |
| How many electrons will be found in the shell of a single Magnesium atom (a.n. 12, a.m. 24)? | twelve |
| When salt is a solid, how are the atoms arranged? | crystalline |