1. The smallest particle of an element (with the same properties as the element), is called a(n) ___. 2. What two major discoveries did Rutherford make? 3. Whose atomic model involves electron shells ? 4. Who developed the Billiard Ball model ? 5. (Multiple Choice) Because atoms are so small, a. scientists create models to describe them. b. they cannot be made of smaller particles. c. there is no way to describe them. d. they cannot be synthesized by scientists. 1. Atom 2. The atom is mostly empty space; & the nucleus is positively charged 3. Niels Bohr 4. John Dalton BELLWORK: MONDAY 2/13/2012
Bellwork : Monday 2/13/2012. Atom The atom is mostly empty space; & the nucleus is positively charged Niels Bohr John Dalton. The smallest particle of an element (with the same properties as the element), is called a(n) ___. What two major discoveries did Rutherford make? - PowerPoint PPT Presentation
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1. The smallest particle of an element (with the same properties as the element), is called a(n) ___.
2. What two major discoveries did Rutherford make?
3. Whose atomic model involves electron shells?
4. Who developed the Billiard Ball model?5. (Multiple Choice) Because atoms are so
small,a. scientists create models to
describe them.b. they cannot be made of smaller
particles.c. there is no way to describe them.d. they cannot be synthesized by
scientists.
1. Atom2. The atom is
mostly empty space; & the nucleus is positively charged
3. Niels Bohr4. John Dalton
BELLWORK: MONDAY 2/13/2012
Element- a pure substance consisting of one type of atom; unique atomic number; cannot be chemically broken down into other substances
Element name- the name of a chemical element
Chemical symbol- (aka atomic symbol) an abbreviation of the element nameNatural elements: 1-2 lettersSome man-made : 3 letters (temporary)
PERIODIC TABLE- PAGE 8
PASS OUT BLUE PERIODIC TABLEWHAT WORDS CAN YOU SPELL??
http://www.privatehand.com/flash/elements.html
Play Tom Lehrer's "The Elements" song or show this Flash animation of the song by Mike Stanfill.
If you can sing this song…in front of the class…then I will give you extra credit! The Boy Who Lived (Harry Potter) did it and so can you! Harry Potter Video
Periodic Table Scavenger Hunt. To complete use: Blue Periodic Table Handout Textbook pages 91-103
PERIODIC TABLE SCAVENGER HUNT- PG 6
NATURE OF SCIENCE
CRT REVIEW
TIME
Get out your pink packets so we can go over answers
Control – factor in an experiment that is kept the same Dependent variable – factor whose value is the result you are testing Graduated cylinder – glass container with markings, used to measure
volume of l iquids Gram – SI unit of measurement for mass Hypothesis – an idea that can be tested by experiment or observation Independent variable – factor that affects the value of the dependent
variable Liter – unit of l iquid volume used with the SI (metric) system Meter – base unit for length in the SI (metric) system Pie chart – a graph in the shape of a circle, where the size of each slice
indicates a percent of the whole Risk-benefit analysis – identifying the possible negative (risk) and
positive (benefit) results of a technology, before deciding to use it Scientific ethics – study of the impact of technology and science on
human society Scientific inquiry – efforts to understand and explain the natural world
through observation and experiment Scientific model – simplified version of some part of the natural world
that helps explain how it functions Trade off – accepting the drawbacks of a technology because of its
benefits Trial – one set of measurements or observations in an experiment
CRT REVIEW – PG. 1 L
1) C2) B3) D4) A5) C6) A
7) B8) D9) B10) B11) A12) D
CRT REVIEW – PG. 2
1) C2) A3) C4) A5) D
6) B7) C8) B9) B10) B
CRT REVIEW – PG. 3
Find the # of protons, neutrons, electrons, atomic
mass, or atomic number when given certain information.
Hydrogen H 1Helium He 2Lithium Li 3Beryllium Be 4Boron B 5Carbon C 6Nitrogen N 7Oxygen O 8Fluorine F 9Neon Ne 10Sodium Na 11Magnesium
Mg 12
Aluminum
Al 13
Silicon Si 14Phosphorus
P 15
Sulfur S 16
Name Symbol Atomic #
Chlorine Cl 17Argon Ar 18Potassium
K 19
Calcium Ca 20Iron Fe 26Nickel Ni 28Copper Cu 28Zinc Zn 30Bromine Br 35Silver Ag 47Tin Sn 50Iodine I 53Gold Au 79Mercury Hg 80Lead Pb 82Uranium U 92
PG. 7 ANSWERS – 32 POINTS, 1 PT. PER LINE
You will take a quiz on all the elements and compounds you have to memorize from page 7
Elements Name, Symbol, and Atomic # MUST be spelled right and use correct capitalization for symbol
Compounds Common name, symbol, and scientific name Spelling counts! Must have the numbers be smaller than the letters.
You MUST get 100% on this test. You will have a zero in the gradebook until you get 100%.
I will give you 3 chances in class to achieve 100%. Once you get it, you don’t have to take it anymore. You will keep taking it until you do. If you can’t get it in 3 chances, you will have to find time before or after school until you get 100
Quiz will be completely fill in the blank so you better know your stuff!
THE ELEMENT QUIZ
Modern Periodic Table
Organized based on atomic number (discovered in the 1900’s) rather than atomic mass• British scientist, Henry Mosley, created the modern periodic table of elements
• At 27 years old he was killed in WWIWhat are examples of some elements that don’t fit Mendeleev’s original
model (organized by increasing atomic mass)?Cobalt/Nickel- 27/28