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drs-structure of the atom quiz

Practice Quiz: structure of the atom.
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What is an atom?
The atom is the basic building block of matter
Where would you find the nucleus of an atom?
The NUCLEUS is found in the CENTER of the atom.
Where is the atom's electron cloud?
The electron cloud is the area surrounding the nucleus of an atom where you will find the electrons.
What is a proton?
A proton is positive charged particle found in the nucleus of an atom (charge = +1)
What is a neutron?
A neutron is a particle that is neutral (no charge) found in the nucleus of an atom.
What is an electron?
An electron is a negative charged particle that is found in the cloud surrounding the nucleus (charge = -1).
The atomic number is equal to the ______
The atomic number is equal to the number of protons in an atom.
What is an atomic mass unit?
The atomic mass is the unit used to measure the mass of an atom (AMU).
What is atomic mass?
The atomic mass is the combined mass of the protons and neutrons of an atom. (also known as mass number)
What are valence electrons?
Valence electrons are the electrons in the outermost energy level (orbit)of an atom.
What is an energy level?
In an atom, energy levels are areas/levels of energy that an electron is able to occupy.
What is an isotope?
Isotopes are atoms of the same element that differ in the number of neutrons.
What are ions?
Ions are atoms of the same element that differ in the number of electrons (have a positive or negative charge overall).
What subatomic particles are found in the nucleus?
Protons and neutrons are found in the nuclues.
What is the overall charge of the nucleus?
The overall charge of the nucleus is positive.
The laws of electrostatics show that LIKE charges ________________.
The laws of electrostatics show that LIKE charges repel.
The laws of electrostatics show that OPPOSITE charges ________________.
The laws of electrostatics show that OPPOSITE charges attract.
True or False: The nucleus of an atom is very dense.
True, the nuclues of the atom is considered very dense.
The ____________ contains most of the mass of the atom.
The NUCLEUS contains most of the mass of the atom.
Since an atom is considered neutral (no charge), the number of protons must equal the number of ___________.
Since an atom is considered neutral (no charge), the number of protons must equal the number of ELECTRONS.
Which particle would be attracted to a negatively charged plate? (proton, neutron, electron)?
The PROTON will be attracted to a negatively charged plate since the proton is postive.
The nucleus is held together by ______ forces?
The nucleus is held together by NUCLEAR forces?
What is the charge of an electron?
Electron = -1 charge
What is the charge of an proton?
Proton = +1 charge
What is the charge of an neutron?
Neutron = Zero (0) charge - neutral
What is the mass of an proton?
Mass of an proton = 1 AMU
What is the mass of an neutron?
Mass of an neutron = 1 AMU
What is the mass of an electron?
Mass of an electron = 0 AMU
The number of __________ in an atom determine what type of atom it is? (gold, silver, mercury, etc.).
The number of PROTONS in an atom determine what type of atom it is? (gold, silver, mercury, etc.).
Has the model of the atom changed over time? Why?
Yes, as scientists got new data/evidence, the model of the atom has changed. This shows us how the process of science can result in changes based on new information to due more research and advances in technology.
What is the current model of the atom? Describe it?
The 'electron cloud' is the current model. In this model, the neutrons and protons are found in the center of the atom in its nucleus. The electrons are in a cloudlike area around the atom in their energy levels.
What makes an atom of silver different than an atom of platinum?
The number of protons in an atom determine what it is. Silver atoms have a different number of protons than platinum atoms.
Hydrogen and helium are different atoms/elements since they contain different numbers of protons (hydrogen = 1, helium = 2)? Are the protons that make up the nuclues the same in both?
The protons are the same - just the number of them differ between the atoms.
Explain - Atoms are to matter as cells are to a human. Atoms are to matter as bricks are to a house.
Atoms are the small pieces/units that make up all matter. Cells are the units that make up humans. Bricks are the units that make up a house.
View the 'digram' of an atom and answer the questions. You will need to view the answer to see the image. When you are done, go to question 34 to check your answers.
1. The red and green circles in the center represent these two atomic subparticles (_______ and _________).
2. The yellow circles shown in the blue area represent this subatomic particle ( __________.)
3. The part containing the red and green circles is the ____________.
4. The charge of the part containing the red and green circles is ____________.
5. The blue area represents the _____________.
5. The charge of the blue area is ________.
Answers to question 33.
1. The red and green circles in the center represent these two atomic subparticles (protons and neutrons).
2. The yellow circles shown in the blue area represent this subatomic particle ( electrons.)
3. The part containing the red and green circles is the nucleus.
4. The charge of the part containing the red and green circles is positive.
5. The blue area represents the electron cloud.
5. The charge of the blue area is negative.