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Chemistry Chapter 4
Summative Assessment
Question | Answer |
---|---|
Chemistry | The study of stuff (matter) |
Matter | Anything that has a mass and takes up space |
Atom | The building block of matter |
Nucleus | The center of the atom and what holds the protons and neutrons |
Proton | A positive charge |
Neutron | No charge |
Electron | A negative charge |
Energy Levels ( electron shells) | |
Molecule | |
The periodic table | an organized chart that is made up of all the atoms |
Atomic number | The number of protons in an atom |
Atomic Mass | The average mass of one atom |
Atomic Symbol | A one or two letter symbol of an atom |
Element | A material that is made up from only one atom |
Periods | The rows in a periodic table |
Groups/Families | The columns in a periodic table |
Valence shell | The outermost shell |
Valence electron | Electrons in the valence shell |
Stable atom | An atom that has a full valence shell |
Unstable atom | An atom that's valence shell is not full |
covalent bond | When |
What is the maximum amount of electrons in level 1? | 2 |
What is the maximum amount of electrons in level 2? | 8 |
What is the maximum amount of electrons in level 3? | 8 |
What does the atomic number represent? | How many protons there are |
What attracts and what repels? | Opposite charges attract and like charges repel. |