How many atoms are in the following molecule: C2H4
6
What is a valence electron?
Electrons on the outermost electron shell
This type of element is malleable, ductile and is a good conductor of electricity
Metal
An atom has 1 valence electron in it's outer shell, what type of ion will the atom form?
X1+
If I am dissolving sugar into water, how could I increase the dissolution rate?
Increase the temperature
Rank the order of states of matter from least KE to most KE
Solid, liquid, gas
How many valence electrons does phosphorus have?
5
Calcium is in group 2 period 3. What kind of ion with what kind of charge would calcium form?
cation with a 2+ charge
The stronger the intermolecular force the ___________ the melting point
higher
Temperature is a measure of..
average kinetic energy of the molecules
This state of matter has a definite volume, but no definite shape
Liquid
Draw the electron dot diagram of calcium
Ca with 2 dots
Which atom has the largest atomic radius out of aluminum, silicon or magnesium?
Magnesium
How do you determine if a substance is polar or nonpolar?
Subtract the electronegativities. If the difference is under 0.4 it is nonpolar, if it is 0.4-1.8 it is considered polar.
What is it called on a phase change diagram where all three points can exist in equlibrium?
Triple point
How many protons, neutrons and electrons does a neutral Beryllium atom have?
P: 4, N:5, E:4
What does an "s-orbital" look like?
A sphere
If calcium loses two electrons, it's electron configuration would be similar to which group?
Noble Gases
Determine the name of the following compound: P3O5
Triphosphorous pentoxide
Does kinetic energy change when substances are increasing temperature, when substances are changing phases or both?
When substances are increasing temperature
What is an isotope?
Atoms with a different atomic mass due to having different amounts of neutrons
Neon has a full p orbital with 6 electrons. What would this orbital look like?
3-dumbell shaped orbitals put together
Valence electrons do not experience the full attractive force of the nucleus, what causes this phenomenon?
The Shielding effect
What is the chemical formula of Aluminum Oxide?
Al2O3
Which compound is most likely going to be a gas at room temperature? A metal compound, an ionic compound or a covalent compound?
Covalent compound