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WorksheetsChem Midterm Review 21.22
Total questions: 31
Worksheet time: 1hrs 2mins
Which charged particles will REPEL each other?
positive + positive
negative + positive
negative + negative
Which charged particles will ATTRACT each other?
positive + positive
negative + positive
negative + negative
In order to change the CHARGE of an atom or object, you must change the amount of ______.
protons
neutrons
electrons
In order to change the IDENTITY of an atom, you must change the amount of ______.
protons
neutrons
electrons
An ion has 9 protons and 10 electrons. Which element is it?
Oxygen
Neon
Fluorine
Nitrogen
An ion has 9 protons and 10 electrons. What is it's charge?
+1
0
-1
An ion has 9 protons and 10 electrons. What is type of ion is it?
cation
anion
Which of the elements below would form CATIONS?
Lithium (Li)
Oxygen (O)
Phosphorus (P)
Potassium (K)
Which of the elements below would forms ANIONS?
Aluminum (Al)
Sulfur (S)
Calcium (Ca)
Nitrogen (N)
Predict the formula for the ionic bond between Na & Cl.
Na2Cl
NaCl2
NaCl
NACl
Predict the formula for the ionic bond between Ca & F.
CaF
CAF
CaF2
Ca2F
As you move left to right on the Periodic Table, the number of valence electrons in the main block elements typically _____.
increases
decreases
stays the same
As you move top to bottom on the Periodic Table, the number of valence electrons in the main block elements typically _____.
increases
decreases
stays the same
What do the elements Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, & Sulfur all have in common?
They are alive.
They are all on the left side of the Periodic Table.
They are the elements that make up life on earth.
They all create the same number of bonds.
Which of the following is the best at dissolving other substances?
water
mineral oil
vinegar
Water molecules stick to each other very easily. This property is referred to as _____.
spectroscopy
light
electrolysis
surface tension
Water can take in and hold lots of heat. This causes areas next to large bodies of water to have a _____ difference in temperature over time than areas inland.
smaller
larger
lack of
Water absorbs and scatters light. Therefore, the bottom of the ocean has _____.
lots of light
no light
Plain water is a great conductor of electricity.
True
False
Solid salt is a great conductor of electricity.
True
False
A _____ solution is formed when salt is dissolved in water. This allows electricity to be conducted in the liquid.
electrolyte
mixture
sugar water
Which of these statements best describes a salt?
Two nonmetal atoms bonded together.
Two elements with a covalent bond.
Something dissolved in water.
A pair of positive and negative ions bonded together.
What is the proper name for a salt made of Potassium (K) & Iodine (I)?
Potassium iodine
Iodine Potassium
Potassium Iodide
A Lewis dot structure shows the number of _____ an element has.
protons
neutrons
electrons
valence electrons
Water is a _____ molecule.
Nonpolar
Polar
Ionic
Which of the following would be the best substitutes for Beryllium (Be)?
Magnesium (Mg)
Lithium (Li)
Boron (B)
Calcium (Ca)
Which of the following would be the best substitute for Fluorine (F)?
Oxygen (O)
Chlorine (Cl)
Neon (Ne)
Bromine (Br)
Atoms share their electrons unequally in a _____ bond.
Polar
Nonpolar
The term used to describe how some atoms "pull" more strongly on electrons in a bond is called _____.
electrolysis
electronegativity
electricity
Atoms share their electrons evenly in a _____ bond.
Polar
Nonpolar
Ionic bonds tend to have _____ boiling points.
high
low
no
