Term
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Definition
| The number of grams in one mole of an element. |
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Term
| What is molar mas numerically equal to? |
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Definition
| The atomic mass of the element. |
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Term
| How is the molar mass written? |
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Definition
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Term
| What is a mole defined as being? |
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Definition
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Term
| What is Avogadro's Number? |
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Definition
| The number of atoms present in 1 mole of atoms. |
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Term
| What is the number of Avogadro's Number? |
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Definition
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Term
| What effect do protons have on electrons? |
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Definition
| They take energy away from electrons. |
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Term
| What is true about electrons closer to the nucleus? |
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Definition
| They have lower energy the closer they are to the nucleus. |
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Term
| What do electrons do because they have energy? |
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Definition
| They are constantly moving in the electron cloud. |
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Term
| What is the reason we can only have a certain number of electrons in an energy level? |
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Definition
| The repulsion between negative electrons. |
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Term
| What is true about the energy of electrons in similar energy levels? |
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Definition
| Electrons in the same energy level possess similar energies. |
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Term
| What energy levels do electrons occupy first? |
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Definition
| The lowest; closest to the nucleus. |
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Term
| How do you tell the number of element's valence electrons? |
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Definition
| Their group number if they are part of the group A elements. |
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Term
| What is the valence shell? |
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Definition
| The highest energy level containing electrons is known as the valence shell. |
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Term
| What are valence electrons? |
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Definition
| The electrons found in the outer most energy level; the valence shell. |
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Term
| What is responsible for chemical reactivity in elements? |
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Definition
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Term
| What do valence electrons cause? |
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Term
| Which group is the Alkali metals? |
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Definition
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Definition
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Term
| Which group is the Alkaline earth metals? |
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Definition
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Term
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Definition
| The Alkaline earth metals |
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Definition
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Term
| Which group is the Halogens? |
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Definition
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Term
| Which group is the Noble gases? |
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Definition
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Term
| What does period number represent? |
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Definition
| The outermost energy level that contains valence electrons. |
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Term
| How do you find out the outermost energy level? |
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Definition
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Term
| What is the smallest thing to give the properties of an element? |
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Definition
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Term
| What does an atom give the the properties of? |
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Definition
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Term
| What are the different properties of matter? |
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Definition
| Physical and chemical properties. |
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Term
| What is a physical change? |
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Definition
| A change in form or otherwise, but no change in actual composition of the substance or element. |
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Term
| What is a chemical change? |
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Definition
| A change in the composition, changing one substance into another. |
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Term
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Definition
| The mass of a substance per unit volume. (mass is always grams) |
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Term
| Represent density in a formula. |
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Definition
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Term
| What are the different volumes for states of matter? |
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Definition
| Gas = 1 L; Liquid = 1mL; Solid = cm^3 or mL |
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Definition
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Term
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Definition
| Two or more elements chemically combined. |
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Term
| What do chemical formulas identify? |
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Definition
| The type and number of atoms of each of the elements in a compound. |
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Term
| What is the atomic mass unit? |
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Definition
| The amu is a unit used to identify the mass of an atom. |
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Term
| How much does a proton weight? |
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Definition
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Term
| How much does a neutron weight? |
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Definition
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Term
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Definition
| Number of protons + number of neutrons. |
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Term
| What is symbolic notation |
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Definition
| Used to represent an atom's atomic symbol, mass number, and atomic number. Mass number on top, atomic number on bottom. |
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Term
| What element can be found in combination with other elements in virtually all living substances? |
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Definition
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Term
| What are subatomic particles? |
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Definition
| The small parts that organize to form atoms: protons, neutrons, and electrons. |
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Term
| What are the small parts that organize to form atoms: proton, neutrons, and electrons? |
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Definition
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Term
| What is the relative mass of an electron? |
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Definition
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Term
| What is the relative mass of a proton? |
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Definition
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Term
| What is the relative mass of a neutron? |
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Definition
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Term
| What is an atomic mass unit (amu)? |
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Definition
| The small unit of mass used to quantify the mass of very small particles. |
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Term
| What is the small unit of amss used to quantify the mass of very small particles? |
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Definition
| The atomic mass unit (amu) |
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Term
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Definition
| 1/12 of a carbon atom containing six protons and six neutrons. |
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Term
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Definition
| Atoms that have the same number of protons, but different number of neutrons. |
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Term
| What are atoms that have the same number of protons, but different number of neutrons? |
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