Chemistry
In the visible portion of the electromagnetic spectrum ____________ has the most energy and ___________ has the least energy
Violet, red
WHAT ARE THE THREE STATES OF MATTER
SOLID LIQUID GAS
What is the formula for Calcium Chloride
CaCl2
Baking ingredients for a cake results in what kind of change?
chemical change
The most electronegative element on the periodic table.
What is Fluorine?
The atomic number tells us this.
What is the number of protons?
The maxiumum number of electrons in the 2nd energy shell
What is 8?
Water is made of these two elements.
What is hydrogen and oxygen?
What group in the periodic table is the most reactive
Alkali Metals
Who proposed the nuclear model using the gold foil experiment?
Ernest Rutherford
Group 18 elements on the right hand side of the periodic table of elements.
What are the Noble Gases?
___________ was the first to publish a system classifying elements (the periodic table) in 1869
Dmitri Mendeleev
List the 7 diatomic elements
Hydrogen, Nitrogen, Oxygen, Fluorine, Chlorine, Bromine, Iodine
Alkali metals belongs to this group
Group 1
Name all 3 subatomic particles.
What are Protons, Neutrons, and Electrons
The maximum number of electrons in the first energy shell
What is 2?
What is the formula for Pentanitrogen monosulfide
N5S
Protons have this charge
What is a postive charge?
What are the 3 main bond types
What is ionic, covalent and metallic?
Using the periodic table, how do you determine whether an element is a metal or non-metal
Find the "ladder" everything to the left (- Hydrogen) is a metal. Everything to the right is a non-metal
The tendency of an atom to attract shared electrons is
ELECTRONEGATIVITY
Making ice cubes from water is what kind of change?
physical change?
Covalent bonding happens generally between these type of elements.
non-metals
Group or family 17 elements are these.
What are Halogens?
The sum of protons and neutrons in the nucleus of an atom is known as the _________
What is the mass number?
At what temperature will 0.654 moles of neon gas occupy 12.30 liters at 1.95 atmospheres?
447 K
Carbon has two naturally occurring isotopes: carbon-12 and carbon-13. Abundance for carbon-12 is 98.89% and carbon-13 is 1.11% What is the average atomic mass of Carbon?
12.011
Atomic Radius ________ from left to right and ________ from top to bottom in the periodic table
decreases, increases
Define the law of conservation of matter
Matter cannot be created or destroyed (can only change form)
Organize the following elements from highest to lowest electronegativity: Carbon, Lithium, Fluorine, Chlorine
Fluorine, Chlorine, Carbon, Lithium