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Austin C
Chem Study Guide Exam
| Question | Answer |
|---|---|
| The branch of Chemistry concerned with the identification and compisition of materials. | Analyical |
| Carried out for the sake of increasing knowledge. | Basic Research |
| These properties include changes that alter the identity of a substance. | Chemical Properties |
| Carried out to solve a problem. | Applied research |
| Particles in a solid state are? | packed closely together |
| State of matter in which material has neither a definite shape nor definite volume | Gaseous State |
| Elements that border the zig-zag line in the period table. | Metalloids |
| A vertical column of blocks on the periodic table. | Group |
| Elements in a group can be expected to have similar | properties |
| In what state does the material has a definite volume but no definite state | liquid state |
| A testable statement used for making predictions and carrying further experiments | Hypothesis |
| Symbol for metric unit used to measure mass | Gram |
| The symbol that represents the measured unit for volume | mL |
| SI unit for time | Second |
| A change in the earth's gravity on an object will affect its? | weight |
| to calculate an objects density you divide its mass by is? | volume |
| Number of significant digits in the measurement 210cm is | two |
| The graph of a direct proportion is a | straight line |
| The SI standards for lenght and mass | meter kilogram |
| Number of significant digitd in 170.040 | six |
| School master who studied chemistry and proposed an atomic theory | John Dalton |
| DIscovered the nucleus by bombarding gold foil with positivly charged particles | Rutherford |
| Smallest unit of an element that can exist alone or in combination with other such particles? | atom |
| Nickel-60 has ____ neutrons | 32 |
| Aluminium has an atomic number of | 13 |
| Which of the following proceses always decreases the number of protons by an even number | alpha decay |
| What unit measures radiation damage to human tissue | rem |
| Who called the 'atom' the atom | Democritus |
| What unit measures radiation | roentgen |
| In a glass tube, electrical current passes from the negative electrode, called the _____ to the other electrode. | cathode |
| As it travels through space , electromagnetic radiation exibits what type of behavior | wavelike |
| The distance between two successive peaks on a wave | wavelength |
| A quantum of electromagnetic energy | photon |
| Main energy level that can hold only two electrons | first |
| The atomic sublevel with the next highest energy after 4p | 5s |
| An element with eight electrons in its highest energy level | noble gas |
| Which group is halogens | 17 |
| How many periods are on the periodic table | 7 |
| How many groups are on the periodic table | 18 |
| The statement that electron occupies the lowest avalible energy orbital | Aufbau Principle |
| Elements with atomic numbers 58-71 in the periodic table | lanthanide |
| Argon, krypton, and xenon are | noble gases |
| Person whose work led to a periodic table based on increasing atomic number | Moseley |
| Mendeleev attempted to organize the chemical elements based on there | properties |
| Period 4 contains 18 elements. How many of these elements are in the d sublevel | 10 |
| Elements in the d sublevel have properties of | metals |
| Measure of the ability of an atom in a chemical compuond to attract electrons is an atom's | electronegativity |
| Postive ion | cation |
| Negative ion | anion |
| The most characteristic property of the noble gases | largely unreactive |
| An octet is equal to | 8 |
| The chemical bond formed when two atoms share electrons | covalent bond |
| If two covalently bonded atoms are identical the bond is | nonpolar covalent |
| Most _______ _________ are partly ionic and partly covalent | chemical bonds |
| The electrons involved in the formation of a chemical bond | valence |
| Atoms are _____ stable when they are combined | more |
| The electron- sea model bonding represents | metallic bonding |
| If a mateial can be shaped or xtended by physical pressure, such as hammering, which property does the material have? | mallealbility |
| In drawing a Lewis structure, each nonmetal atom except hydrongen should be surrounded by how many electrons | 8 |
| Compared to ionic compounds, molecular compounds have _______ melting points | lower |
Created by:
a.crider
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