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Csmith1313

Chad Smith's Exam Study Guide

QuestionAnswer
The branch of chemistry that includes the study materials and processes that occurr in living things is Biochemistry
The study of substances containing carbon is Organic Chemistry
Technology is the Application of scientific knowledge to solve problems
A physical property may be investigated by Melting ice
Two features that distinguish matter are Mass and Volume
The melting of candle wax is classified as a physical change because it produces no new substances
The particles in a solid are packed close together
Group ___ in the periodic table contains only metals. 2
A horizontial row of blocks in the periodic table are called a(n) Period
Which element has properties most similar to those of sodium? A.) Boron B.) Boron C.) Sulfer B.) Boron
Qualitative observations are recorded using Numerical Information
Quantitative observations are recorded using Non-Numerical Information
Standards are chosen because they Are reproducible in anther lab
The symbol for the metric unit to measure mass is G
The metric unit for the thickness of a dime is Millimeter
The Unit M3 measures Volume
The SI unit base unit for time is Second
How many minutes are in a week? 10,080
To calculate the density of an object Divide its masss by its volume
The answer to 314.53km + 32km is expressed as 347km
Chemistry is the study of Matter, mass, and all things that affect it
Write the following in scientific notatition: 55,000,000 5.5 x 10 to the 7th
An atom of potassium has 19 protons and 20 neutrons. What is its mass number? 39
How many significent digits are in 50.00000s 7
What does 218 represent in polonium-218? Mass Number
The half life of an isotope is the time required for half the nuclei in a sample to Undergo raidoactive decay
What is an example for an Alpha Particle 4/2 He
The total number of an atoms protons and nuetrons is its Mass Number
What unit measures radiation damage to human tissue Rem
A positively charged particle with mass 1.673 x 10-21g is a Proton
For electromagnetic radiation, c equals Frequency times length
In Si, the frequencey of electro magnetic radiation is measured in Frequencey
One wave property of electromagnetic radiation is Frequencay
The distance between two successive peaks on a wave is Wavelength
A quantum of electromagnetic energy is called Photon
The wave model of light didn't explain the photoelectric effect
If electrons in an atom have the lowest possible energies, the atom is in the Ground State
The part of the atom where the electrons CANNOT be found is the Nucleus
The reigon outside the nucleus where an electron can most likely be found is the Electron Cloud
The Main energy levels of an atom are indicated by the Principal Quantum Number (4th)
The discovery of noble gases changed Mendeleev's peridoic table bt adding a new Group
What are elements in the perodic table with atomic nembers 58-71 called The Lanthanide elements
To which group does lithium and potassium belong? Alkali Metals
Elements in a group or column in the perodic table are expected to have similar properties
Mendeleev attempted to organize the chemical elements based on their Properties
In the modern perodic table, elements are ordered according to increasing atomic number
Argon, Krypton, and xenon are Noble Gases
One half the distance between the nuclei of identical atoms that are bonded together is called Atomic Radius
Which group does Flourine and Chlorine belong to ? Halogens
Beacaue the first energy level contains only the 1s sublevel, the number of elements in this period is 2
Created by: Csmith1313
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