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Periodic Trends
The Atom
Ions
Bonding
Random
100
The elements of the periodic table are arranged according to this.
What is in order of their atomic number?
100
This holds the protons and neutrons of the nucleus together.
What is the strong nuclear force?
100
What is the name for the ionic compound Al2O3
What is Aluminum oxide?
100
This is the name for KNO3.
What is potassium nitrate?
100
True or false: Water freezing is an exothermic change.
What is true?
200
This is one element with very similar chemical properties to calcium.
What is strontium, or magnesium?
200
This is the atomic number of an atom with 13 protons and 14 neutrons.
What is 13?
200
This is what you need to do in order to change F to F-
What is add one electron?
200
This is the formula for Sodium Sulfide.
What is Na2S?
200
True or false: shape changes or state changes are chemical changes.
What is false.
300
These type of elements have both metal and non-metal characteristics or properties.
What are metalloids?
300
The atoms of a carbon-12 vs. carbon-14 isotope vary in this.
What is the atomic mass or number of neutrons?
300
Element X is in Group 2 and element Y is in Group 17. This is what happens when a compound is formed between these two atoms.
What is X loses electrons to Y to form an ionic bond.
300
This is the type of bond between hydrogen and oxygen in a water molecule.
What is polar covalent?
300
The density of a 10% sugar solution is ___________ than the density of pure water.
What is greater?
400
This group of the periodic table contains atoms with a stable outer electron configuration.
What are the noble gases?
400
True or false: According to the current day model of the atom, we state that it mostly occupies empty space.
What is true?
400
This is the name for the COVALENT compound SF4.
What is sulfur tetrafluoride?
400
True or false: All chemical reactions require a transfer of electrons in forming new bonds.
What is False?
400
This is the type of phase change that results in an overall increase in the randomness of particles.
What is melting?
500
According to the periodic table, this element most readily accepts electrons.
What is fluorine?
500
These are the outermost electrons in an atom.
What are the valence electrons?
500
Determine the number of protons, electrons, neutrons, and valence electrons in: Potassium
What is P: 19 E: 19 N: 20 VE: 1
500
This is the type of bond that is formed between a highly elctronegative element and an electropositive element.
What is polar covalent?
500
A student took a small ice cube and heated it in a large, closed container. First, the ice cube melted and then the water boiled into steam. This is what happened to the volume overtime.
What is as water the volume was similar to the ice cube, but much greater once it became steam?