Textbook Question
Add labels to the figure that follows, which illustrates the subatomic particles associated with a carbon atom.
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2. Cell Chemistry & Cell Components
Atoms- Smallest Unit of Matter
Back2. Cell Chemistry & Cell Components
Atoms- Smallest Unit of Matter
- Textbook Question
Pick out the correct match(es) of element and number of valence electrons. Draw a planetary model of each atom to help you choose the best answer.
a. Oxygen—6
b. Chlorine—8
c. Phosphorus—5
d. Nitrogen—3
e. Carbon—4
3views - Textbook Question
The subatomic particles responsible for the chemical behavior of atoms are
(a) Electrons
(b) Ions
(c) Neutrons
(d) Protons
1views - Textbook Question
Provide the atomic symbol for each of the following elements:
a. Calcium
b. Carbon
c. Hydrogen
d. Iron
- Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Every element has a characteristic number of protons, which is called the element's mass number.
2views - Multiple ChoiceThere are __________ naturally occurring elements.8views
- Multiple Choice
A neutral atom of chlorine has an atomic number of 17. It has __________ electrons in its third shell.
6views - Textbook Question
All of the following are examples of the four major elements contributing to body mass except:
a. Hydrogen
b. Carbon
c. Nitrogen
d. Sodium
e. Oxygen
8views - Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
Valence electrons are the electrons in the outermost shell of an atom.
3views - Multiple ChoiceAn element has eight protons, nine neutrons, and eight electrons. Its atomic number and atomic mass, respectively, are __________.5views
- Textbook QuestionIn the term trace element, the adjective trace means thata. the element is required in very small amounts.b. the element can be used as a label to trace atoms through an organism's metabolism.c. the element is very rare on Earth.d. the element enhances health but is not essential for the organism's long-term survival.26views
- Textbook Question
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
The mass number of an atom is the sum of its neutrons and protons.
3views - Textbook QuestionDRAW IT Draw Lewis dot structures for each hypothetical molecule shown below, using the correct number of valence electrons for each atom. Determine which molecule makes sense because each atom has a complete valence shell and each bond has the correct number of electrons. Explain what makes the other molecule nonsensical, considering the number of bonds each type of atom can make. a.6views
- Multiple Choice
The average oxygen atom has a mass number of 16 and an atomic number of 8. This means that the number of neutrons in this oxygen atom is:
31views - Multiple Choice
How many electrons would be present in the valence shell of a sulfur atom (atomic number 16, mass number 32)?
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