1: Nature of Science
14: Solids, Liquids, & Gasses
15: Classification of Matter
16/17: Atoms & Periodic Table
18: Bonding & Compounds
19: Chemical Reactions
20: Nuclear Reactions
100
Out of: pounds, inches, ounces, and milliliters, this is the only unit that belongs to the metric system
What is millilliters?
100
The state of matter that has a fixed volume but no fixed shape.
What is a liquid?
100
This type of pure substance, such as Water (H2O), is made of two or more elements chemically combined.
What is a compound?
100
These two subatomic particles are located inside the nucleus of the atom.
What are Protons and Neutrons?
100
This is the number of valence electrons found in an atom of Nitrogen (Group 15).
What is 5?
100
Chemical equations must be balanced in order to satisfy this scientific law.
What is the Law of Conservation of Mass?
100
This force is responsible for holding protons and neutrons together in the nucleus against the repulsion of positive charges.
What is the Nuclear Strong Force?
200
The formula for density
What is D = M/V or density equals mass divided by volume
200
A solid melts into a liquid because of an increase in this.
What is temperature, kinetic energy or thermal energy?
200
A salad or trail mix is an example of this type of mixture because you can see the different parts.
What is a Heterogeneous Mixture?
200
These are atoms of the same element that have different numbers of neutrons (and therefore different mass numbers).
What are Isotopes?
200
This type of bond is formed between a metal and a nonmetal and involves the transfer of electrons (gain and loss)
What is an ionic bond?
200
On an energy diagram, if the energy of the products is lower than the energy of the reactants, the reaction is classified as this.
What is Exothermic?
200
The most penetrative form of radiation which can be stopped only by lead and concrete.
What is Gamma?
300
In an experiment testing how temperature affects reaction speed, temperature is this type of variable because it is changed by the scientist.
What is the Independent Variable?
300
According to Bernoulli, this decreases as speed increases in a fluid.
What is pressure?
300
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Milk and fog are examples of this specific type of mixture, where particles are larger than those in a solution but do not settle out like they do in a suspension.
300
This group of elements, found in Group 18 of the periodic table, is known for being unreactive.
What are the Noble Gases?
300
This is the correct chemical name for the covalent compound S3O2
What is trisulfur dioxide?
300
A substance that speeds up a chemical reaction by lowering the activation energy required.
What is a Catalyst?
300
This nuclear process involves splitting a heavy nucleus into lighter nuclei and is currently used in nuclear power plants.
What is Fission?
400
The equivalent of 200.0 mg in grams (g).
What is 0.2 mg?
400
On a heating curve, this happens to the temperature while a phase change is actually occurring.
What is remaining constant or not changing.
400
The term that describes the classification of shapes below:
What is a mixture?
400
This is the number of neutrons in an atom of the isotope of Chlorine-39
What is 22?
(atomic number 17; 39 - 17 = 22)
400
This is the correct chemical formula for the ionic compound Sodium Phosphide
What is Na3P?
(Sodium forms a +1 charge, Phosphorus forms a -3)
400
These are the correct coefficients to balance the equation:
___ Na + ___ Cl2 --> ___ NaCl
What is 2, 1, 2 (2Na + Cl2 --> 2NaCl)
400
If a radioactive sample has a half-life of 5 months, this amount of a 40g sample will remain after 15 months.
What is 5 grams? (40g--> 20g --> 10g --> 5g)