Terms
Two or more atoms linked together to make a substance with unique properties.
What is a molecule?
Draw the Lewis structure for indium (In).
In with 3 dots
The three most common phases of matter
What are solid, liquid, gas?
A covalent molecule that has an even distribution of electrons so there are no net charges in the molecule itself.
What is a nonpolar molecule?
A chemical bond that is made by sharing electrons.
What is a covalent bond?
Draw the Lewis structure for Beryllium (Be).
Be with 2 dots
What is the melting point?
You see water droplets on appearing on the surface of a glass. Where is the water coming from, and what is the name of the process that is making them?
What is water vapor in the air and condensation (or condensing)?
An atom's outermost electrons
What are valence electrons?
Draw the Lewis structure for PI3
P has 5 dots and I has 7 dots
I P I
I
The molecules of a substance form a pattern and stay in that pattern. What phase is the substance in?
What is a solid?
Which of the following can form hydrogen bonds: H2, NH3, PCI3?
What is NH3?
First, to make hydrogen bonds, you need hydrogen atoms. Thus, PCl3 can't do it. However, you need more than just hydrogen. You also need unshared electrons for the hydrogens to get close to.
A weak bond between certain kinds of molecules caused by the attraction of a hydrogen atom in one molecule to an unshared pair of electrons on the other molecule.
What is a hydrogen bond?
Draw the Lewis structure for H2Se
H gets 1 dot and Se gets 6
Molecules move faster when you ________ energy.
What is add?
You are testing two liquids. You try mixing both of them with water. Liquid A mixes with water well. Liquid B does not. Which liquid is non polar?
What is liquid B?
Water is polar, and polar molecules do not mix well with non polar molecules.
In any non-nuclear process, the total mass of everything involved must remain the same.
What is the Law of Mass Conservation?
The Lewis structure for the ion that indium will become to make an ionic compound.
What is In3+?
You have a sample of solid cholesterol (C27H46O) and a sample of Epsom salt (MgSO4). Which has the higher melting point?
What is Epsom salt?
Which will have the highest melting point: H2S, NBr3, NaBr?
What is NaBr?
Ionic compounds have higher melting points than covalent compounds. The other compounds are composed of only nonmetals.