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Title: CHEM 1111-001: CH. 1-4
Description: This note collects a whole study of lecture class starting from chapter 1 to 4. The rest of the notes of the chapters will be upload shortly after. Starting from chapter 1-4, it'll cover a whole lots on scientific methods, theory, matters, atoms, and many more! Easy notes and simple explanations to understand the material, so check it out!
Description: This note collects a whole study of lecture class starting from chapter 1 to 4. The rest of the notes of the chapters will be upload shortly after. Starting from chapter 1-4, it'll cover a whole lots on scientific methods, theory, matters, atoms, and many more! Easy notes and simple explanations to understand the material, so check it out!
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Chapter 1, 2, 3, 4 Notes
What is Scientific Method?
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Observation
Initial guess (Hypothesis must be experimented)
Experiments are done to give data
Calculated so conclusion can be evaluated
- often one answer leads to other questions
CONCLUSION:
o Validate a hypothesis
o Disprove hypothesis
Physical Quantity
Number of unities
Length
Mass
Volume
Temperature
Time
Info
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5 x 10^6= 4,500,000
Ex: 2
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0002023
Ex: conversion Ib kg; 2
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20 since 1 Ib = 1 kg
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20= 85
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Atomic Spectra
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Show only light “colors” where energy released when an e- falls back to ground state is
in our visual range
Light is electromagnetic radiation
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Radiation always has an energy
The different types of light at represented on the electromagnetic spectrum
Visible light is the only light that human eyes register
Chapter 3: Descriptions of Matter
How elements distributed?
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Metals – shiny, ductile, conduct electricity
Non-metals – not malleable, or ductile, not shiny ---variable
Metalloids- shown in green = act as semiconductor
Groups are also called “Families”
o Each family of element has its own family traits
Alkali metals- very reactive metals
Alkaline earth metals- also very reactive
Halogen- most reactive nonmetal; never in combined with nature
Noble gases- extremely unreactive elements existed as lone atoms in nature (DO NOT
REACT)
Transition metals- brightly colored when combined with other elements
*Elements beyond 92 are human-made*- IMPORTANT
What is a substance?
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Any chemical that has its entire volume made of only one kind of chemical formula (Pure
Substance)
Title: CHEM 1111-001: CH. 1-4
Description: This note collects a whole study of lecture class starting from chapter 1 to 4. The rest of the notes of the chapters will be upload shortly after. Starting from chapter 1-4, it'll cover a whole lots on scientific methods, theory, matters, atoms, and many more! Easy notes and simple explanations to understand the material, so check it out!
Description: This note collects a whole study of lecture class starting from chapter 1 to 4. The rest of the notes of the chapters will be upload shortly after. Starting from chapter 1-4, it'll cover a whole lots on scientific methods, theory, matters, atoms, and many more! Easy notes and simple explanations to understand the material, so check it out!