Chapter 2.1 Atoms, Ions and Molecules pgs 34-39
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by Kathy Egbert
| 46 Questions
1
1
LastName First Name
2
1
Class Period: A1 A2 A4 A5 A6 A7 A8
3
1
Fill in the missing words on the 5 Principles of the Atomic Theory:
1. Every element is made of ___________ (5 letter word - not capitalized, must be spelled correctly to receive credit)
4
1
Fill in the missing words on the 5 Principles of the Atomic Theory:
2. All atoms of any element are the _____ (4 letter word - not capitalized, must be spelled correctly to receive credit)
5
1
Fill in the missing words on the 5 Principles of the Atomic Theory:
3. Atoms of different elements can combine to form ___________ (9 letter word - not capitalized, must be spelled correctly to receive credit)
6
1
Fill in the missing words on the 5 Principles of the Atomic Theory:
4. _______ are not made, destroyed, or changed in chemical reactions (5 letter word - not capitalized, must be spelled correctly to receive credit)
7
1
Fill in the missing words on the 5 Principles of the Atomic Theory:
5. The number and kinds of _______ remain the _____ in a compound. (5 letter word/4 letter word - put one space between the two words, not capitalized, must be spelled correctly to receive credit)

8
1
Use the above Venn diagram to answer the question, "Is an "atom" (B) part of an "element" (A) or is an "element" (B) part of an "atom"? Match up the word "atom" and "element" to show their relationship.
A= __________and B=______________ (type word correctly with only one space between each to receive credit, do not capitalize)
9
1
Rutherford is given credit for discovering the nucleus of an atom. The nucleus is composed of
B electrons and neutrons
A only electrons
D protons and electrons
C neutrons and protons
10
1
Protons have a ______________charge.
B -
C no charge
A +
11
1
Neutrons have a ______________charge.
C no charge
B -
A +
12
1
Thompson was given credit for discoving electrons inside an atom. Electrons have a ______________charge.
C no charge
A +
B -
13
1
An element is an element based on the number of _________________.
D protons and neutrons
B neutrons
C electroncs
A protons
14
1
Discovered by Chadwick, neutrons usually are equal in number with the number of ______________in an atom.
D quarks in an atom
B electrons
A protons
C protons and electrons
15
1
In comparison with the size of protons and neutrons, electrons are
C smaller.
A larger.
B the same size as the nucleus.
D very, very small.
16
1
Electrons are located outside the nucleus in orbitals called shells.
True
False
17
1
The first obital/shell of an atom can hold up to _____________electrons.
A 1
B 2
C 4
D 8
18
1
The second obital of an atom can hold up to _____________electrons.
A 1
B 2
C 4
D 8
19
1
The number of valence electrons determines the
A electromagnetism of an atom.
B chemical properties of an atom.
C stability of an atom.
D A, B, and C are correct
E B and C are correct
20
1
If needed, refer to a Periodic Table to help you with this question. How many more electrons could fit in the 2nd orbital shell of oxygen?
A 1
B 2
C 3
D 4
21
1
An atom is most stable when its outer shell only has half the valence electrons in it.
True
False
22
1
96% of the human body consists of these four elements:
A hydrogen, oxygen, carbon and calcium
B hydrogen, carbon, calcium and iron
C hydrogen, oxygen, nitrogen and carbon
D hydrogen, nitrogen, calcium and iron
23
1
The remaining 4% of a human's body consists of these seven elements:
A iron, sulfur, iron, carbon, silicon, hydrogen, and oxygen
B iron, calcium, sulfur, phosphorous, potassium, sodium, and chromium
C iron, oxygen, nitrogen, magnesium, potassium, calcium and sodium
D iron, hydrogen, oxygen, nitrogen, calcium, iron, and sodium
24
1
Practice reading a Periodic Table. Hydrogen's atomic symbol is H, atomic mass is 1.008, atomic number 1, # of protons 1, # of neutrons 0, # of electrons 1, and is located in Group 1, Period 1.
A True
B False
C False because Hydrogen also has 1 neutron.
D False because hydrogen is in Group 2, Period 2.
25
1
Practice reading a Periodic Table. Helium's atomic symbol is He, atomic mass is 4.0026, atomic number 2, # of protons 2, # of neutrons 2, # of electrons 2, and is located in Group 13, Period 1.
A True
B False
C False because Helium is in Group 2.
D False because Helium is in Period 2.
26
1
Practice reading a Periodic Table. Neon's atomic symbol is Ne, atomic mass is 20.180, atomic number 10 meaning that Neon has the exact same number of 10 protons, 10 neutrons, and 10 electrons. Neon is located in Group 2, Period 2.
A True
B False
C False because Neon is in Group 18, Period 2.
D False because Neon is in Group 18 and Period 4.
27
1
Practice reading a Periodic Table. Iron's atomic symbol is Fe and its atomic mass is 26 meaning that it has 26 protons, 26 neutrons, and 26 electrons.
A True
B False because its atomic symbol is Ir.
C False because Iron's atomic mass is 55.845.
D False because Iron is in Group 8, Period 4.
28
1
Practice reading a Periodic Table. Sodium's atomic symbol is S and its atomic number is 11. It is located in Group 1 and Period 3.
A True
B False because its atomic symbol is Na.
C False because its atomic number is 22.990.
D False because Sodium is in Group 3, Period 3.
29
1
Practice reading a Periodic Table. Carbon - the element of life - has an atomic symbol C, atomic mass 12.011, and atomic number 6. It has 4 empty spaces in its valence electron shell. It is located in Group 14, Period 2.
A True
B False because its atomic symbol is Ca.
C False because its atomic number is 12.011.
D False because Carbon is in Group 2, Period 14.
30
1
Practice reading a Periodic Table. Columns on the periodic table tell you how many valence electrons are in the outer shell of the element. Group 18, also known as the Nobel Gases, all have ________________
A a full number of electrons in their outer shell, making them quite stable.
B half of the number of electrons possible in their outer shell, making them capable of bonding with lots of other elements.
C only 1 electron in their outer shell.
D 2 electrons in their outer shell because that is the maximum number of electrons that will fit in the shell.
31
1
Practice reading a Periodic Table. The rows, called periods, tells you that all the elements on that row have the same number of shells. All the elements on the same row as Carbon have 2 shells.
A True.
B False.
C False because each element has an increasing number of shells across the row.
D False because Carbon only has one shell filled to its maximum of 6 electrons.
32
1
Select the correct word that matches this definition:
atoms held together by covalent bonds, sharing a pair of electrons
A molecule
B compound
C element
D ion
33
1
Select the correct word that matches this definition:
composed of the same type of atoms
A molecule
B compound
C element
D ion
34
1
Select the correct word that matches this definition:
an atom that has gained or lost at least one electron
A molecule
B compound
C element
D ion
35
1
Select the correct word that matches this definition:
composed of at least two different types of atoms
A molecule
B compound
C element
D ion
36
1
If an atom has lost an electron, then it has an extra __________________making the ion _____________ because the numbers of electrons and protons aren't equal anymore.
A proton....negative
B proton...positive
C electron....negative
D electron....positive
37
1
If an atom has gained an electron, then it has an extra __________________making the ion _____________ because the numbers of electrons and protons aren't equal anymore.
A proton....negative
B proton...positive
C electron....negative
D electron....positive
38
1
Mg+4 would indicate that magnesium has lost 4 electrons.
True
False
39
1
Cl- would indicate that chlorine has gained one extra electron.
True
False
Go to classzone.com, Animated Biology, Unit 1, Chapter 2, and go through the "Atoms and Bonding".
40
1
What are the three examples of molecules used to show covalent bonding?
A oxygen, carbon dioxide, and ammonia
B sodium, chlorine, and salt
C carbon, nitrogen, and hydrogen
D oxygen, carbon, and hydrogen
41
1
How many electrons end up in the outer shells of these examples of covalent bonding?
A 2
B 4
C 8
D none
42
1
Which of the three molecules are also compound(s)?
A carbon dioxide
B oxygen
C ammonia
D carbon dioxide and ammonia
43
1
At the same animation there is also an example of ionic bonding. What is the common household compound used as an example of ionic bonding?
A table salt
B sugar
C carbon dioxide
D oxygen
44
1
When an element loses an electron, the element becomes a _______________ion
A positive
B negative
C neutral
45
1
When an element gaines an electron, the element becomes a _______________ion
A positive
B negative
C neutral
46
1
Negative and positive ions are attracted to each other and consequently work well as mediums for conducting electricity.
True
False
Practice making any of the elements that have atomic numbers 1 through 24 using the game pieces provided at the lab stations. Once you feel confident you can draw an element and show the correct number of protons, neutrons, and electrons it has and place them in the nucleus and correct orbitals, check with me to get your "assessment" for Chapter 2.1 - Drawing and labelling an atom.
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