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Chemistry Semester Exam 1

Total questions: 56

Worksheet time: 35mins

Name
Class
Date
1.

An atom with an atomic number of 8 has 8 protons.

a)

True

b)

False

2.

Ions of an element have the same number of protons but different numbers of neutrons.

a)

True

b)

False

3.

Electrons in an atom are arranged in the nucleus.

a)

True

b)

False

4.

The atomic radius generally decreases across a period in the periodic table.

a)

True

b)

False

5.

Metalloids are found only on the left side of the periodic table.

a)

True

b)

False

6.

Covalent bonds form between metals and nonmetals.

a)

True

b)

False

7.

Covalent bonds involve the transfer of electrons from one atom to another.

a)

True

b)

False

8.

A molecule with a polar covalent bond has an unequal sharing of electrons.

a)

True

b)

False

9.

A liquid at room temperature has no definite shape and volume.

a)

True

b)

False

10.

The process of a solid changing directly to a gas is called condensation.

a)

True

b)

False

11.

The metric system uses units such as ounces, pounds, and inches.

a)

True

b)

False

12.

Scientific notation is used to express very small numbers only.

a)

True

b)

False

13.

Significant figures are important for indicating the precision of a measurement.

a)

True

b)

False

14.

Balancing a chemical equation ensures the conservation of mass.

a)

True

b)

False

15.

In a chemical reaction, products are the substances you start with.

a)

True

b)

False

16.

A synthesis reaction involves combining two or more substances to form a new compound.

a)

True

b)

False

17.

Avogadro's number is approximately equal to 6.022 x 10^23.

a)

True

b)

False

18.

The molar mass of a compound is the mass of one mole of its atoms.

a)

True

b)

False

19.

An ion with an atomic number of 8 has 8 electrons.

a)

True

b)

False

20.

Isotopes of an element have the same number of protons but different numbers of neutrons.

a)

True

b)

False

21.

An element always has the same number of electrons and protons.

a)

True

b)

False

22.

The atomic radius generally increases across a period in the periodic table.

a)

True

b)

False

23.

Metalloids are found only on the left side of the periodic table.

a)

True

b)

False

24.

Ionic bonds form between metals and nonmetals.

a)

True

b)

False

25.

Covalent bonds involve the transfer of electrons from one atom to another.

a)

True

b)

False

26.

A molecule with a polar covalent bond has an unequal sharing of electrons.

a)

True

b)

False

27.

Solids have a definite shape and volume.

a)

True

b)

False

28.

The process of a solid changing directly to a gas is called condensation.

a)

True

b)

False

29.

The metric system uses units such as grams, liters, and meters.

a)

True

b)

False

30.

Scientific notation is used to express very small numbers only.

a)

True

b)

False

31.

Significant figures are important for indicating the precision of a measurement.

a)

True

b)

False

32.

Balancing a chemical equation ensures the conservation of mass.

a)

True

b)

False

33.

In a chemical reaction, products are the substances you start with.

a)

True

b)

False

34.

A synthesis reaction involves combining two or more substances to form a new compound.

a)

True

b)

False

35.

Avogadro's number is approximately equal to 6.022 x 1023.

a)

True

b)

False

36.

The molar mass of a compound is the mass of one mole of its atoms.

a)

True

b)

False

37.

Molarity is a measure of the concentration of a solution.

a)

True

b)

False

38.
What is an ion?
a)
A Charged Atom
b)
A Large Atom
c)
A Small Atom
d)
A Cute Atom
39.

In a chemical reaction, reactants are the substances you end with.

a)

False

b)

True

40.

Electronegativity is a measure of an atom's ability to attract and hold electrons.

a)

True

b)

False

41.

Isotopes of an element have the same number of protons but different numbers of neutrons.

a)

True

b)

False

42.

The process of a gas changing directly to a solid is called deposition.

a)

True

b)

False

43.

In a chemical reaction, reactants are the substances you end with.

a)

False

b)

True

44.
A vertical column is called...
a)
group
b)
tower
c)
period
d)
crew
45.

Which elements are colored red?

a)

nonmetals

b)

metals

c)

metalloids

46.
Where are the metalloids located on the periodic table?
a)
Blue
b)
Red
c)
Green
47.

Which element is in period 3 and group 14?

a)

Silicon

b)

Helium

c)

Mercury

d)

Neon

48.

Fluorine gains electrons. Fluorine is now more _____ than it was before.

a)

positive

b)

negative

49.

If an atom's charge becomes +2, what does that mean about the atom?

a)

The atom gained 2 electrons.

b)

The atom lost 2 electrons.

c)

The atom is bonded to another atom in a covalent bond.

d)

The atom has 2 protons.

50.
What is a anion
a)

a metal that gained ve- that has a negative (-) charge

b)

a non-metal that gained ve- that has a negative (-) charge 

c)

a metal that lost ve- that has a positive (+) charge 

d)

a non-metal that lost ve- that has a positive (+) charge

51.
If an oxygen atom has 8 protons (+) and 10 electrons (-), what is it's charge?
a)
O10-
b)
O8+
c)
O2-
d)
O10+
52.
Where are the nonmetals located on the periodic table? 
a)
Blue
b)
Red
c)
Green
53.

Which is more reactive?

a)

Si

b)

S

54.

Which has a greater electronegativity?

a)

Na

b)

Cl

55.

Which is more likely to form a cation?

a)

Ca

b)

S

56.

Which is more likely to form a anion?

a)

C

b)

Ne