Math in Chemistry
The number of sig figs in 0.100450
What is 6?
First to use the word "atomos"
Who is Democritus?
The number of valence electrons for Barium
What is two?
The model that states electrons orbit at fixed levels around the nucleus
What is the Planetary Model/Bohr?
The variable that we change
What is the manipulated or Independent variable?
The standard notation of 1.54 x 10-3
What is .00154?
Aristotle's concept of matter included these
What are Earth, Wind, Fire, Water?
All atoms carry this charge
What is neutral?
The abbreviated electron configuration of Tin (Sn 50)
What is [Kr] 5s2 4d10 5p2 ?
Property that deals with how much of the substance you have
What is extensive property?
The measurement that is the most accurate
3.1220 or 3.122
What is 3.1220?
1. Atoms of different elements form in 1:1 ratios
2. Atoms from the same element are identical
3. Atoms from different elements are different
What is Dalton's atomic theory?
The weighted average of the masss of the isotopes of an element
What is the atomic mass?
The maximum number of f orbitals in any single energy level in an atom
What is 7?
The four states of matter
What are solid, liquid, gas and plasma?
The equivalent in degrees Celsius of 45 degrees Fahrenheit
(0°C × 9/5) + 32
7.2 degrees Celsius?
The part of the atom discovered by JJ Thomson's cathode ray experiment
What is the electron?
The number of neutrons in Nickel 28
What is 31?
The relationship between frequency and energy
What is direct? (high energy = high frequency)
The simplest form of matter
What is an element?
(1.9x102) + (1x 103) / (4x102) (5x103)
What is .1 x 10-3 = 1x10-2
(1.9 x 102) + (.1 x 102) / 20 x 105
= 2.0 x 102 / 20x105
= .1 x 10-3
= 1 x 10-2
The idea that the atom has a central nucleus and a volume that is occupied mostly by electrons was developed by______________ using _____________ experiment. (2 words)
What are Rutherford and the Gold Foil experiment?
The one that shows isotopes of each other
A. 84 M 85M 86M
38 38 38
B. 91 X 93X 95 X 25 27 29
C. 33 Z 34 Z 35Z 41 42 43
What is "A"
The effect that happens when certain wavelengths of light are shined on metal
What is the photoelectric effect?
The step of the scientific method that requires you to use your senses
What is the observation step?