WorksheetsChem Unit 1 Review
Total questions: 60
Worksheet time: 5hrs 0mins
Wood burning is an example of _______
physical intensive property
physical extensive property
chemical change
Physical change
Crumpling paper is an example of
physical change
chemical change
physical property
chemical property
All of these are examples of chemical properties except...
Flammability
Combusting
Fizzing
Boiling Point
If it has mass and takes up space it can be considered
Matter
Physical Property
Chemical Property
Density
What is a kind of matter that cannot be broken down into any other kind of substance?
Elements
Mixtures
Compounds
Density
What is a mixture that has no visible differences in composition?
Element
Compound
Heterogeneous Mixture
Homogeneous Mixture
What is the atomic number?
the number of protons in the nucleus
the number of protons and neutrons in the nucleus
the number of neutrons in the nucleus
the number of protons in the energy levels
What is the mass number?
the number of protons in the nucleus
the number of protons and neutrons in the nucleus
the number of neutrons in the nucleus
the number of protons and electrons in the atom
What is the atomic number of this atom?
1
3
4
7
Most of the mass in an atom is made up of _____________________?
protons and electrons
protons and neutrons
neutrons and electrons
electrons and quarks
In order for an atom to be neutral what has to be true?
The atom has more protons than neutrons
The atom has more neutrons than protons
The atom has the same number of protons and neutrons
The atom has the same number of protons and electrons
What does the 6 represent?
Atomic mass
atomic number
chemical symbol
element name
What subatomic particles would you find in the nucleus of an atom?
Protons only
Protons and Neutrons
Neutrons and Electrons
Protons and Electrons
Which subatomic particles contribute the most to the mass of an atom?
Protons, Neutrons, Electrons
Protons only
Protons and Electrons
Protons and Neutrons
If an atom has 12 positively charged subatomic particles, which of the following must it also have to be considered a neutral atom?
12 neutrons
12 electrons
12 protons
24 protons and neutrons
The atomic number of an element that has 9 protons, 9 electrons, and 10 neutrons is _____.
9
10
19
28
An atom has an atomic number of 15 and a mass number of 31. How many protons are there in the atom?
15
31
16
47
What is the atomic number of the atom pictured?
9
10
18
19
Which of the following determines the identity of an element?
number of protons
atomic mass
number of neutrons
number of shells
What is a positive ion called?
anion
cation
isotope
covalent
What is a negative ion called?
anion
cation
covalent
isotope
How many electrons would a Nitrogen ion gain/lose? If it has 5 valence electrons.
lose 5
gain 5
lose 3
gain 3
What is the ion formed from Sulfur? If it has 6 valence electrons.
S+2
S-2
S+6
S-6
How many electrons would a Calcium ion gain/lose? If it has 2 valence electrons.
lose 1
gain 1
lose 2
gain 2
If an atom loses electrons, the charge will be positive.
true
false
A Bromine ion gains 1 electron, which of the following is the correct symbol for a Bromine ion?
Br-1
Br+1
Br+7
Br-7
What is the charge of an atom that has lost one electron?
-1
-2
+1
+2
An atom with 2 protons, 3 neutrons, and 4 electrons has a charge of ____.
+2
-2
+3
0
If an element has 3 valence electrons, what charge will likely form on its ion ?
+3
+5
-3
-5
Ions are:
atoms with a positive or negative charge
atoms with no charge
atoms with ONLY a positive charge
atoms with ONLY a negative charge
Na has 1 valence electron. It will have a charge of _______
+1
+2
-1
-2
Be has 2 valence electron. It will have a charge of _______
+1
+2
-1
-2
Ca has 2 valence electron. It will have a charge of _______
+1
+2
-1
-2
Al has 3 valence electron. It will have a charge of _______
+3
-3
+2
-2
P has 5 valence electron. It will have a charge of _______
+3
-3
+2
-2
S has 6 valence electron. It will have a charge of _______
-2
-1
+1
+2
Iodine has 7 valence electron. It will have a charge of _______
-2
-1
+1
+2
F has 7 valence electron. It will have a charge of _______
-2
-1
+1
+2
Oxygen has 6 valence electron. It will have a charge of _______.
+1
-1
+2
-2
Why are ions formed?
To make our lives difficult
Because atoms want 8 valence electrons
Because atoms have the same number of protons and electrons
Because atoms gained neutrons
Elements on the LEFT side of the periodic table will most likely form:
Positive ions
Negative ions
Neutral Ions
None of these
Which types of elements from cations?
metals
nonmetals
metalloids
noble gases
Which types of elements from anions?
metals
nonmetals
metalloids
noble gases
Elements that have the same number of energy levels are said to be in the same ______.
group
period
family
classification
Which element has similar chemical properties as sodium but has 7 energy levels?
Francium (Fr)
Cesium (Cs)
Rubidium (Rb)
Potassium (K)
Which halogen is found in period 4?
Krypton (Kr)
Xenon (Xe)
Bromine (Br)
Iodine (I)
Which element is found in group 2, period 6?
Oxygen (O)
Barium (Ba)
Selenium (Se)
Carbon (C)
A grouping of elements based on similar chemical properties, arranged by columns in the periodic table; also known as a group
family
period
row
isotope
A row on the Periodic Table of Elements
family
period
row
isotope
What group number are the halogens found?
18 (8A)
1
2
17 (7A)
Periodic law states that the elements are arranged according to their atomic ________ so that elements with similar chemical properties are in the same ________ and properties repeat periodically.
numbers, rows
masses, rows
masses, column
numbers, column
What is the name of group number 2?
transition metals
halogens
metaloids
alkaline earth metals
where are the metaloids found
far left, vertical
stair step/diagonal
far right horizontal
at the bottom
What is the name of group number 1?
halogens
noble gases
alkali metals
alkaline earth metals
Valence electrons are located...
inside the nucleus
in outer space
on the outermost orbit of an atom
10
2
8
18
14
4
3
28
This is a correct dot diagram for fluorine (F)
true
false
This is a correct dot diagram for oxygen (O)
true
false
The elements in this group all have 5 valance electrons.
Group 5
Group 15
Group 3
Group 18
