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the atom
unit 3 lesson 1-0
| Question | Answer |
|---|---|
| atom | the smallest particle is inside us and animal and plants. |
| electron | atom that have a negative charge. |
| nucleus | a small, dense center that has a positive charge and is surrounded by moving electrons. |
| proton | he called the the positively charged particles particles in the nucleus protons. |
| neutron | atoms of each element are unique. |
| atomic number | Hydrogen has an atomic number of 1 because each of its atoms contains just one proton. |
| metal | most metals are solid at room temperature. |
| metalloid | metal and some properties of nonmetals. |
| group | (from top to bottom) on the periodic table is called agroup. |
| period | ways from one end of the period to the other. |
| periodic table | each card listed the mass of an atom |
| nonmetal | poor conductors of heat and electricity. |