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46 Cards in this Set
- Front
- Back
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What is Matter?
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anything that has mass and occupies space
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What are the characteristics of a solid?
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has a definite shape and definite volume
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What are the charactersitics of a liquid?
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has an indefinent shape and a definite volume. shapes to the container
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What are the characteristics of a gas?
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has an indefinite shape and an indefinite volume. occupies the whole container
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What is the difference between a homoatomic molecule and a heterotomic molecule?
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* Homoatomic moleculeall atoms present are the same.
* In a heteroatomic molecule atoms are different |
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what is a chemical change?
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Chemical change a process that involves a change in the baic nature of the substance to form more substances that have different properties than the original
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What is a physical change?
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physical change does not change the basic nature or chemical composition of a substance. ex: chopping wood
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What does the symbol G mean?
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giga 10^9 billion
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What does the symbol M mean?
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mega 10^6 million
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What does the symbol k mean?
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kilo 10^3 thousand
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What does the symbol d mean?
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deci 10^-1 one tenth
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What does the symbol c mean?
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centi 10^-2 one hundredth
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What does the symbol m mean?
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milli 10^-3 one thousandth
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What does the symbol u mean?
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micro10^-6 one millionth
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What does the symbol n mean?
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nano 10^-9 one billionth
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What does the symbol p mean?
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pico 10^-12 one trillionth
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True or false 1 mL = 1cm^3
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True
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Exact number
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number with no uncertainty
12 eggs |
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Inexact number
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number with uncertainty. the temperature of the water is 89 degrees
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how many sig figs in A.5623.00,
B0.0031, C97,200 D 637 |
A. 6 uncertainty in hundredth
B. 2 uncertainty in ten thous. C 3 uncertainty in hundred D 3 uncertainty in ones |
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While multiplying and dividing what are the sig fig rules?
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the number of sig figs in the answer is the same number of sig figs in the measurement with the fewest sig figs
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When adding and subtracting what are the sig fig rules?
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the answer has no more digits to the right of the decimal point than are found in the measurement with fewest digits to right of the decimal point
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Density
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mass/Voume
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how to convert F to C?
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5/9 (F-32)
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how to convert C to F
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9/5 (c) +32
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How to convert Kelvin to celcius
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K-273
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How to concert Celcius to Kelvin
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C +273
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Define a calorie
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the amount of heat energy needed to raise the temperature of one gram of water by 1 degree celcius
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Define Specific heat
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the quantity of heat energy in calories necesesary to reasie the temperature of 1 gram of a substance by 1 degree celcius
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How many jules are in one calorie?
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4.184J/ 1 cal
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What is the equation for heat absorbed?
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specific heat X mass X tem change
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Define a subatomic particle
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small particle building blocks of atoms. Electrons, protons and neutrons
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Define an Electron
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subatomic particle that has a negative charge. smallest in terms of mass
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Define a proton
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subatomic particle that has a positive charge. way bigger than an electron
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Define a neutron
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subatomic particle with no charge
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what is the nucleus?
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small dense positively charged part of an atom
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Wht is a nucleon?
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a subatomic particle located in the nucleus. neutron or proton
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what is the atomic number?
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number of protons in an atom. which= number of electrons
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What is the mass number?
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sum of protons and neutrons present
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What is an isotope?
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atoms of an element that have th same number of protons and electrons but different number of neutrons. same atomic number but different mass numbers
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period is horizontal or verticle?
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horizontal
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Group is horizontal or verticle?
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verticle
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Where are the Halogens located?
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VIIA or 17 reactive colored elements that are ases at room temperature or near room temp.
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What and where are the Alkaline metals?
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IIA or group 2 of the periodic table, soft shiny metals that react moderately with water
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What are the Alkali metals?
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IA or group 1. soft shiny metals. readily react with water
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What happens to the energy of an electron as it goes farther from the nucleus?
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energy increases. Electrons in shell 1 have the least amount of energy
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