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Review for Science Benchmark 2
Chemistry
14
Science
7th Grade
01/03/2013

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Cards

Term
What are the 3 parts of an atom (subatomic particles) that we have learned about?
Definition
protons, neutrons, electrons
Term
What 2 subatomic particles are in the nucleus of the atom?
Definition
protons and neutrons
Term
Which subatomic particle moves around outside of the nucleus?
Definition
electron
Term
What kind of charge does a proton have?
Definition
positive +
Term
What kind of charge does an electron have?
Definition
negative -
Term
What kind of charge does a neutron have?
Definition
It has no charge. It is neutral.
Term
What information is given in each box of the periodic table?
Definition
Look at your periodic table. Make sure you know what number represents the atomic number, the number of protons in the atom, the number of electrons in the atom and the atomic mass of the atom. Also make sure you can figure out how many neutrons are in the atom.
Term
Look at your periodic table. What is the atomic mass of Magnesium?
Definition
24.31
Term
Look at your periodic table. What is the atomic number of Berylium?
Definition
4
Term
The atomic number of sodium is 11 and the atomic mass is 22.99. How many protons does sodium have in its nucleus?
Definition
11
Term
The atomic number of sodium is 11 and the atomic mass is 22.99. How many electrons does sodium have in its nucleus?
Definition
11
Term
The atomic number of sodium is 11 and the atomic mass is 22.99. How many neutrons does sodium have in its nucleus?
Definition
Term
What are 3 ways to increase the rate of solubility of of a solute?
Definition
Break it into smaller pieces. (This increases the surface area where the action of dissolving takes place.
Term
What does PH tell you about a solution?
Definition
It tells you the concentration of hydrogen ions in the solution. It tells how acidic or basic a solution is.
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