Most of the elements on the Periodic Table are classified as what? Where are they located?
Metals, left of the Periodic Table
100
What is used to measure mass? Volume?
Mass- triple beam balance; volume- graduated cylinder AND ruler
100
The elements on the far right of the Periodic Table are classified as what?
non-metals/Noble Gases
200
Particles are tightly packed together and vibrate in place
Solid
200
Atomic number tells you what about the atom?
The number of protons
200
Groups on the periodic table have the same number of what?
Valence electrons
200
A block of wood has a mass of 4g and a volume of 10 cubic centimeters. What is the density?
0.4 g/cubic centimeters
200
The most reactive metal group on the Periodic Table
Alkali Metals (Group 1)
300
Particles move very quickly and spread out in all directions to fill the volume of the container
Gas
300
What two things make up Atomic Mass?
Protons and neutrons
300
Periods on the Periodic Table have the same number of what?
Energy levels?
300
What is the equation to find the density of a box?
L x W x H
300
Describe 2 properties of metals.
Malleable, good conductors of heat/electricity, ductile, hard, shiny,
400
Phase change: solid to gas
Sublimation
400
What are valence electrons?
Electrons in the outermost energy level
400
Elements in the same groups have SIMILAR what?
Chemical properties
400
An object that is _______ dense than the liquid it is in will float.
Less
400
How many protons and neutrons does Iron (Fe) have?
26- P, 30-N
500
The types of phase changes that absorb energy/heat
Endothermic
500
How many electrons is considered full? What is the exception?
8; Helium-2
500
What group has the least reactive elements and why?
Noble gases, because they have 8 valence electrons (complete outer shell)
500
A student is given a bar-shaped sample of a metal. After measuring the metal it was found that the sample was 2 cm long, 3 cm wide and 2 cm tall. It is 126 grams. What is the density?
10.5 g/cubic centimeters
500
Which two elements are more chemically similar? Aluminum, Magnesium, Boron, Oxygen