2.1.1 Atomic Structure: SPONCH and the Atom Flashcards
1
Q
SPONCH
A
- stands for the elements that are found in the majority of molecules present in living organisms.
- You are more than 99% SPONCH!
- In other words, you are more than 99%:
- Sulfur
- Phosphorous
- Oxygen
- Nitrogen
- Carbon
- Hydrogen
2
Q
atom
A
- made up of protons, neutrons, and electrons. Protons and neutrons are found in the nucleus, or center, of the atom. Electrons exist in clouds outside of the nucleus.
3
Q
atomic number
A
- of an atom equals its number of protons.
4
Q
atomic mass
A
- of an atom is approximately equal to the number of neutrons plus the number of protons found in the atom
5
Q
proton
A
- have a positive charge and a mass of 1 atomic mass unit (amu).
6
Q
neutron
A
- have no charge and have a mass of 1 amu.
7
Q
electron
A
- have a negative charge and negligible mass. They are found in a cloud around the nucleus
8
Q
Which of the following components of an atom has a positive charge?
A
- proton
9
Q
In the figure below, which portion represents the atomic mass?
12
C
6
A
- 12
10
Q
Which of the following is not one of the elements that makes up SPONCH?
A
- sodium
11
Q
Which of the following is not approximately 1 amu?
A
- an electron
12
Q
The atomic number of an atom refers to the number of
A
- protons
13
Q
The atomic mass is equal to the number of
A
- protons plus neutrons
