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📚EA7: HW23 (11.07)

Total questions: 60

Worksheet time: 1hrs 2mins

Name
Class
Date
1.
_______ and _______ are located inside of the nucleus.
a)
Electrons and Protons
b)
Protons and Neutrons
c)
Neutrons and Electrons
2.
What charge does a neutron have?
a)
+1
b)
-1
c)
No charge
3.
The mass number of an element that has18 protons, 18 electrons, and 19 neutrons is _____.
a)
12.5
b)
13
c)
25
d)
37
4.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
5.
In the equation,          2Mg + O2 ---> 2MgO, which are the reactants?
a)
Mg and O
b)
MgO
c)
Mg and MgO
d)
O and MgO
6.
Which equation obeys the law of conservation of mass?
a)
H2 + O2 ------>  H20
b)
C + 2H2 ---->  CH4
c)
2Fe2O3  ------> 2O2 + 4Fe
7.
What is the total number of atoms present in 5Na3PO4?
a)
5
b)
40
c)
55
d)
60
8.
In chemical compounds, covalent bonds form when
a)
the electronegativity difference between two atoms is very large.
b)
electrons are completely transferred between two metals.
c)
pairs of electrons are shared between two nonmetal atoms.
d)
two nonmetal atoms are attracted to each other by opposite charges.
9.
Which of the following is a negatively charged subatomic particle?
a)
Electron
b)
Proton
c)
Neutron
d)
Quark
10.
What kind of bond forms between two nonmetals?
a)
Covalent bond
b)
Ionic bond
c)
Can be either covalent or ionic
d)
Hydrogen bond
11.
Most of the mass of an atom is found it its _____.
a)
electron cloud
b)
nucleus
c)
atomic number
d)
empty space
12.
These particles orbit around the nucleus of an atom.  What are they called?
a)
electrons
b)
protons
c)
neutrons
d)
photons
13.
Nonmetals are located in what section of this periodic table?
a)
Blue
b)
Yellow
c)
Pink
14.
Which problem is balanced?
a)
PbO2 + 2H2--> H2SO4
b)
SO2 + H20 --> H2SO4
c)
2Na + 2H2O --> 2NaOH + H2
d)
2Na + 2H2O --> 2NaOH + H
15.
Which problem is balanced?
a)
PbO2 + 2H2
b)
SO2 + H20 --> H2SO4
c)
2Na + 2H2O --> 2NaOH + H2
16.
CO2 + H2O → C6H12O6 + 6H2O2
a)
Balanced
b)
Not Balanced
17.
PCl5 + 4 H2O → H3PO4 + 5 HCl
a)
Balanced
b)
Not Balanced
18.

What category is silicon (Si) a part of?

a)

Metal

b)

Nonmetal

c)

Metalloid

d)

Halogens

19.

How many protons does an atom of Chromium have?

a)

52

b)

24

c)

28

d)

12

20.
What is a Solid?
a)
Matter that has a definite shape and a definite size.
b)
Matter that has a definite size and no definite shape
c)
Matter that has no definite shape or size
d)
Matter that has no definite shape and size
21.

How many Aluminum atoms are in Al2O3?

a)

3

b)

5

c)

2

d)

1

22.

What are reactants?

a)

The chemicals that start the reaction.

b)

The chemicals that the reaction produced.

c)

The chemicals that are on the right side of the arrow.

23.

Which statement best describes an element?

a)

any combination of two or more atoms of different types

b)

a pure substance made up of only one kind of atom

c)

a substance containing only carbon atoms

d)

any kind of crystal

24.

An ionic bond is between

a)

metal and metal

b)

metal and nonmetal

c)

nonmetal and nonmetal

25.

Matter is made up of particles that are constantly moving.

a)

True

b)

False

26.

Which state of matter requires the most energy?

a)

Solids

b)

Liquids

c)

Gases

27.

What state of matter does the picture below represent?

a)

solid

b)

liquid

c)

gas

d)

plasma

28.

An atom with atomic number 6 would have how many protons?

a)

6

b)

12

c)

3

d)

cannot be determined

29.

Predict the bond that will form between Sr and S.

a)

Ionic

b)

Covalent

30.

Predict the bond that will form between Se and Cl.

a)

Ionic

b)

Covalent

31.

Classify:

Sulfur, S

a)

metal

b)

non-metal

c)

metalloid

32.

An element can be identified by its unique number of -

a)

ions

b)

electrons

c)

protons

d)

neutrons

33.

What is the periodic table mostly made of?

a)

metalloids

b)

nonmetals

c)

metals

34.

Is Helium (He) metal, non-metal, or metalloid?

a)

metal

b)

non-metal

c)

metalloid

35.

How many valence electrons does Lead (Pb) have?

a)

4

b)

12

c)

6

d)

14

36.

How many valence electrons does Sodium (Na) have?

a)

1

b)

2

c)

3

d)

4

37.

Bond Type: Na2Br

a)

Ionic

b)

Covalent

c)

Metallic

38.

Bond Type: CO2

a)

Ionic

b)

Covalent

c)

Metallic

39.

Bond Type: K2Br

a)

Ionic

b)

Covalent

c)

Metallic

40.

Which element has 6 protons?

a)

Lithium (Li)

b)

Carbon (C)

c)

Boron (B)

d)

none of the above

41.

Which of the following is an Alkali Metal?

a)

Magnesium (Mg)

b)

Chromium (Cr)

c)

Sodium (Na)

d)

Fluorine (F)

42.

Which of the following is a Noble Gas?

a)

Krypton (Kr)

b)

Chlorine (Cl)

c)

Radium (Ra)

d)

Gallium (Ga)

43.

How many valence electrons are in the atom "Mg"?

a)

1

b)

5

c)

3

d)

2

44.

Reactants: 2Mg + O2 ---> 2MgO

a)

Mg and O

b)

MgO

c)

Mg and MgO

d)

O and MgO

45.

Balanced or NOT: 2N2O5 ---> 2N2 + 5O2

a)

Balanced

b)

NOT

46.

Balanced or NOT: C5H12 + 6O2 ---> 5CO2 + 6H2O

a)

Balanced

b)

NOT

47.

Ionic/Covalent/Metallic Bond: H2O

a)

Ionic

b)

Covalent

c)

Metallic

48.

Ionic Bonding is:

a)

The transfer of protons

b)

The transfer of nuetrons

c)

The transfer of electrons

d)

None Of the above

49.

Which elements usually form positive ions (cations)?

a)

Metals

b)

Non Metals

50.

Balanced or NOT: AlCl3 + 3H2O ---> Al(OH)3 + 3HCl

a)

Balanced

b)

NOT

51.

Which elements usually form negative ions (anions)?

a)

nonmetals

b)

metal

52.

Covalent Bonding is:

a)

Share electrons

b)

transfer electrons

c)

contain a sea of electrons

53.

Ionic/Covalent/Metallic Bond: NH3

a)

Ionic

b)

Covalent

c)

Metallic

54.

A Covalent Bond happens between:

a)

Nonmetal (NM-) and Nonmetal (NM-)

b)

Nonmetal (NM-) and Metal (M+)

c)

Metal (M+) and Metal (M+)

55.

Balanced or NOT:

a)

Balanced

b)

NOT

56.

Which charges attract?

a)

Opposite

b)

Same

57.

Ionic/Covalent/Metallic Bond: Cu3Zn2

a)

Ionic

b)

Covalent

c)

Metallic

58.

Balanced or NOT: 4HOCl + C ---> 2H2O + CO2 + 2Cl2

a)

Balanced

b)

NOT

59.

Which of the following elements will form a cation?

a)

Arsenic

b)

Copper

c)

Bromine

d)

Fluorine

60.

Which of the following will form an anion?

a)

Titanium

b)

Iron

c)

Calcium

d)

Sulfur

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