Unit 1
Temperature is a measure of what type of energy?
What is kinetic energy?
How many protons are in Oxygen?
8
A horizontal row of the periodic tale is called?
a period
How many molecules are in 1 mole?
6 x 1023
An ionic compound is made of which type(s) of elements?
metal and nonmetal
Salt crystals forming when seawater evaporates is evidence of what kind of change?
physical
What is the mass number of an atom with atomic number 10 and 12 neutrons?
22
Argon, Krypton, and Xenon are all what type of element? (alkali metals, alkali earth metals, halogens, nobel gases)
Nobel Gases
How many liters does 1 mole of gas take up at STP?
22.4
How many valence electrons does Mg have?
2
What gas/gasses are produced when water undergoes electrolysis?
Hydrogen (H2) and Oxygen (O2)
How many electrons does Mg with a 2+ charge have?
10
What alkaline earth metal is in period 4?
Ca
What is the molar mass of H2O?
18
What is the charge of an Ca ion?
2+
Of the 4 types of matter, Brass (made of evenly distributed copper and zinc) represents which type?
homogeneous mixture/solution
Isotopes contain the same number of ______ but a different number of _______ .
protons.......neutrons
Reactivity tends to increase when going which direction(s) across the periodic table?
down and left
A large 'M' is a shorthand for what conversion factor?
moles/liter
What is the name of Na3N?
Sodium Nitride
What compound(s) are made when something burns?
water (H₂O) and carbon dioxide (CO₂)
What direction is an electron moving when light is released from an atom? (up or down an energy level)
down
Electronegativity is a measure of what?
Atoms ability to attract/hold electrons
How many moles are there in 44.8L of gas?
2 moles
What is the formula for Aluminum Phosphide?
AlP