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K...Kennedy
Study Stuff :)
| Question | Answer |
|---|---|
| The Branch of Chemistry that includes the study of materials and processes that occur in living things is organic chemistry or biochemistry? | Biochemistry |
| The branch of chemistry that is concerned with the identification & composition of materials is analytical or physical? | Analytical |
| The study of substances containing carbon is organic or nuclear? | Organic |
| Chemical Properties include changes that ____ the identity of a substance. | Alter |
| Two features that distinguish matter are mass and _____. | Volume |
| Physical means can be used to separate compounds or mixtures? | Mixtures |
| Group ___ in the periodic table contains only metals. 2 or 13? | 2 |
| Based on its location in the periodic table, you could infer that _______ is very unreactive. Si or Ar? | Ar |
| A horizontal row of blocks in the periodic table is called | Period |
| A vertical column of blocks in the periodic table is called a | Group |
| 1. The liquid boils at 100 degreees C, is quantative or qualative? | Quantative |
| What do you use to record qualative observations? Numerical Information or non-numerical information? | Non-numerical information |
| The SI standard units for length and mass are | Meter and Kilogram |
| The symbol for the metric unit used to measure mass is g or m? | g |
| The symbol that represents the measured unit for volume is | mL |
| To calculate the density of an object... | divide its mass by its volume |
| Five darts strike in the center of the target. Whoever threw the darts is accurate or precise? | Accurate |
| To two significant figures, the measurement 0.0255 g should be reported as | 2.5 x 10 squared g |
| The measurement that has only nonsignificant zeros is... | 0.0037 mL |
| The dimensions of a rectangular solid are measured to be 1.27 cm, 1.3 cm, and 2.5 cm. The volume should be recorded as 4.13 cm cubed or 4.128 cm cubed | 4.13 cm cubed |
| The graph of an inverse proportion is a | straight line |
| John Dalton studied chemistry and proposed what? | the atomic theory |
| Who discovered the nucleus by bombarding gold foil with positively charged particles | Rutherford |
| The nucleus was discovered by whom? | Rutherford |
| Experiments with cathode rays led to the discovery of the what? | Electron |
| The fact NaCl always consists of 39.34% Na and 60.66% Cl is what law? | Law of Definite Proportions |
| Alpha decay decreases the number of protons by an even or odd number? | Even |
| Greatest penetrating radiation | Gamma |
| Gamma rays are | electromagnetic waves |
| Who called the atom an atom? | Democritus |
| Roentgen measures what? | Radiation |
| J.J. Thompson discovered what? | Electrons |
| Nuclear forces hold what together? | Particles in the nucleus |
| As the atomic number increases the number of electrons in an atom does what? | Increases |
| For electromagnetic radiation, c (the speed of light) equals... | Frequency times wavelength |
| Hertz is the SI unit that measures the frequency of _____________ radiation | Electromagnetic |
| Quantum of electromagnetic energy is called... | A photon |
| The wave model of light did not explain what? | the Photoelectric effect |
| The Photoelectric Effect is the... | Emission of electrons from metals that have absorbed photons. |
| For an electron to go from ground state to an excited state energy must be... | Absorbed |
| Part of the atom where the electrons CANNOT be found is the | Nucleus |
| An Orbital is a... | 3 dimensional region around a nucleus where an electron may be found. |
| the magnetic quantum number | indicates the orbital within the sublevel |
| The main energy levels of an atom are indicated by the... | Principal quantum numbers |
| Mendeleev noticed that properties of elements usually repeated at regular intervals when the elements were arranged in order of increasing | Atomic Mass |
| Radioactive elements with atomic numbers 90 to 103 in the periodic table | The actinides |
| The lanthanide elements contain... | Elements with atomic numbers of from 58 to 71 |
| Atomic Radius | one-half the distance between the nuclei of identical atoms that are bonded together. |
| The most characteristic property of the noble gases is that they | have low boiling points |
| Elements that border the zigzag line in the periodic table are | Metalloids |
| Energy required to remove an electron from an atom | Ionization Energy |
| The energy required to remove an electron from an atom ________ as you move left to right from potassium through iron | generally increases |
| If 2 covalently bonded atoms are identical the bond is | nonpolar covalent |
| Molecule | A neutral group of atoms held together by covalent bonds |
| Noble Gases satisfy what rule without forming compounds | Octet |
| Molecular Compounds have | lower melting points |
| Electron-sea model of bonding represents | Metallic Bonding |
| Metallic Bonds have what characteristics | Malleability & Ductility |
| Compound that vaporizes readily at room temperature is most likely to what type of compound? | Molecular Compound |
| In a Lewis Structure each nonmetal atom except hydrogen should be surrounded by | 8 Electrons |
| Electronegativity | When atoms share electrons, the electrical attraction |
| Polar Bond | atoms that share electrons that have uneven attractions. |
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Kitticakez :)
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