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Chem Midterm Review
| Question | Answer |
|---|---|
| This state of matter has a definite volume but indefinite shape. | Liquid |
| The transition from liquid to gas is called this | Vaporization / evaporation |
| Silver tarnishing is an example of this type of change. | Chemical change. |
| This is something that cannot be broken down into simpler substances | a pure substance (elements and compounds) |
| These are the three pieces of evidence of a chemical change. | Color changes, temperature changes, and gases evolved? |
| This group on the periodic table has a charge (oxidation state) of +1. | alkali metals? |
| Which is the smallest atom/ion in the following list: Al, Al1+, Al2+. | Al2+ |
| This is the only metalloid in period 6. | Astatine |
| What element in group 16 (6A) has the smallest radius? | Oxygen |
| On the periodic table, elements with the same number of valence electrons are called this. | groups (families) |
| This is the formula for a compound formed from zinc and sulfur. | ZnS |
| The Calcium Ion has a similar electronic structure to this element. | Argon |
| Alkaline Earth Metals form these types of ions. | cations (+2) |
| This is what the number in Roman Numerals used when naming compounds with transition metals represents | their charge |
| This is the number of atoms in the compound Magnesium Phosphate. | 13 |
| The number of protons is called the _______. | atomic number |
| The mass number tells you __________. | the number of protons and neutrons in the nucleus? |
| Energy is released when electrons move from a ______ state to a _______ state. | excited to ground |
| What are the three subatomic particles, their charge, and location. | proton (nucleus, +1), neutron (0, nucleus), electron (energy levels, -1) |
| Atoms that have different number of neutrons but the same number of protons are called ______. | isotopes |
| This is the idea that states that matter cannot be created or destroyed in any chemical process. | The law of conservation of matter? |
| This is the number of protons in an atom with a mass number of 20 and atomic number of 9. | 9 |
| This scientist said that electrons can only be found in specific orbitals around the nucleus. | Neils Bohr |
| He developed the plum pudding model. | Thompson |
| This person formalized the idea that an atom is a tiny indivisible particle. | Dalton |
| What are the number of protons, neutrons, and electrons in this: 25 2+ Mg 12 | p=12, n=13, e=10 |
| This is the SI unit for mass. | kilogram |
| This is the type of mixture that scatters light and does not settle out. | Colloid |
| Water freezes at this temperature and boils at this temperature. | 273 K (00C) and 373 K (100C)? |
| How do you convert from Celcius to Kelvin | Add 273 |
| This is the mass of a black with a volume of 3 cm3 and a density of 5 g/cm3. | 15g |
| Elements from the same group are also said to be from this. | The same family |
| This person developed the first periodic table or is considered the Father of the Periodic Table. | Mendeleev |
| This is the number of electrons in the outermost shell / valence level of nitrogen. | 5 electrons |
| This general classification of elements is considered to be poor conductors of heat. | Nonmetals |
| Element number 119 would have similar properties to this element on the periodic table. | Francium |
| This is the formula for a compound formed from silver and oxygen. | Ag2O |
| The Boron Ion has a similar electronic structure to this element. | Helium |
| This is the charge of the cation in the following compound: CrS2. | What is +4? |
| In order to gain a full octet (valence electron level) Sulfur must do this. | What is gain 2 electrons? |
| This is the number of atoms in the compound Ammonium Sulfate. | 15 |
| The number 1020300 has how many significant figures. | 5 |
| When I multiply the numbers 4.5 and 390.240, the answer will have this many significant figures. | 2 |
| This is the number 3527030000000 in scientific notation. | 3.52703 x 1012 |
| This is the sum of the numbers 8.901 and 0.055555 written in scientific notation. | 8.957 |
| When writing down a measurement, you must make sure that the digits include this. | What are all of the measured #’s and 1 level of estimation? |
| When an electron goes from an excited (higher) state back to the ground (lower) state, this is released. | light energy |
| An atom with 8 protons, 9 neutrons, and 10 electrons has this mass number. | 17 |
| Compared to the original atom, its ion would have a different number of these, and its isotope would have a different number of these. | electrons and neutrons |
| He is credited with the discovery of the nucleus, the existence of protons, and the idea that the atom is composed mostly of empty space. | Rutherford |
| The most reactive elements on the periodic table are found here, while the least are found here on the periodic table. | left side and right side |
Created by:
Mr_Bird
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