Chad Smith's Exam Study Guide
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each of the black spaces below before clicking
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| The branch of chemistry that includes the study materials and processes that occurr in living things is | Biochemistry
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| The study of substances containing carbon is | Organic Chemistry
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| Technology is the | Application of scientific knowledge to solve problems
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| A physical property may be investigated by | Melting ice
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| Two features that distinguish matter are | Mass and Volume
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| The melting of candle wax is classified as a physical change because | it produces no new substances
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| The particles in a solid are | packed close together
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| Group ___ in the periodic table contains only metals. | 2
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| A horizontial row of blocks in the periodic table are called a(n) | Period
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| Which element has properties most similar to those of sodium? A.) Boron B.) Boron C.) Sulfer | B.) Boron
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| Qualitative observations are recorded using | Numerical Information
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| Quantitative observations are recorded using | Non-Numerical Information
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| Standards are chosen because they | Are reproducible in anther lab
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| The symbol for the metric unit to measure mass is | G
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| The metric unit for the thickness of a dime is | Millimeter
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| The Unit M3 measures | Volume
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| The SI unit base unit for time is | Second
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| How many minutes are in a week? | 10,080
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| To calculate the density of an object | Divide its masss by its volume
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| The answer to 314.53km + 32km is expressed as | 347km
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| Chemistry is the study of | Matter, mass, and all things that affect it
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| Write the following in scientific notatition: 55,000,000 | 5.5 x 10 to the 7th
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| An atom of potassium has 19 protons and 20 neutrons. What is its mass number? | 39
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| How many significent digits are in 50.00000s | 7
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| What does 218 represent in polonium-218? | Mass Number
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| The half life of an isotope is the time required for half the nuclei in a sample to | Undergo raidoactive decay
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| What is an example for an Alpha Particle | 4/2 He
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| The total number of an atoms protons and nuetrons is its | Mass Number
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| What unit measures radiation damage to human tissue | Rem
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| A positively charged particle with mass 1.673 x 10-21g is a | Proton
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| For electromagnetic radiation, c equals | Frequency times length
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| In Si, the frequencey of electro magnetic radiation is measured in | Frequencey
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| One wave property of electromagnetic radiation is | Frequencay
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| The distance between two successive peaks on a wave is | Wavelength
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| A quantum of electromagnetic energy is called | Photon
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| The wave model of light didn't explain | the photoelectric effect
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| If electrons in an atom have the lowest possible energies, the atom is in the | Ground State
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| The part of the atom where the electrons CANNOT be found is the | Nucleus
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| The reigon outside the nucleus where an electron can most likely be found is the | Electron Cloud
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| The Main energy levels of an atom are indicated by the | Principal Quantum Number (4th)
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| The discovery of noble gases changed Mendeleev's peridoic table bt adding a new | Group
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| What are elements in the perodic table with atomic nembers 58-71 called | The Lanthanide elements
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| To which group does lithium and potassium belong? | Alkali Metals
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| Elements in a group or column in the perodic table are expected to have similar | properties
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| Mendeleev attempted to organize the chemical elements based on their | Properties
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| In the modern perodic table, elements are ordered according to | increasing atomic number
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| Argon, Krypton, and xenon are | Noble Gases
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| One half the distance between the nuclei of identical atoms that are bonded together is called | Atomic Radius
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| Which group does Flourine and Chlorine belong to ? | Halogens
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| Beacaue the first energy level contains only the 1s sublevel, the number of elements in this period is | 2
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