WHAT IS AN ATOM?
Objectives
Start
Since Democritus…
Atom:
Is the basic unit of matter used to understand the physical and chemical properties of the elements of the periodic table.
Structure of an atom:
Welco me 6th gradrs!
https://www.nagwa.com/en/explainers/598170124170/
Subatomic particles:
- Because individual atoms contain an equal number of positively charged protons and negatively charged electrons, they are electrically neutral.
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Subatomic particles:
- Each electron has a negative electrostatic charge that exactly balances the positive electrostatic charge of one proton.
- This statement could be rewritten to say that protons have a relative electrostatic charge of +1 and electrons have a relative electrostatic charge of −1.
- Neutrons are neutrally charged particles, and they always have an electrostatic charge value of 0.
https://www.nagwa.com/en/explainers/598170124170/
Mass of subatomic particles:
Protons and neutrons have essentially the same mass, and they are both much heavier than a single electron. Protons and neutrons have a relative mass of 1, and electrons have a relative mass of 1/1840.The following table summarizes data about the subatomic particles that make up atoms.
Distribution of mass in the atom
- Mass is distributed very unevenly in atoms.
- The atomic nucleus is just one small part of the atom, but it contains all the heavy subatomic protons and neutrons.
https://www.nagwa.com/fr/explainers/598170124170/
Let's practice
Let's practice
Welcome 6th graders!
A journey soon begin through Social Science experiences!
Let’s practice
Welcome 6th graders!
A journey soon begin through Social Science experiences!
Let’s practice
Welcome 6th graders!
A journey soon begin through Social Science experiences!
Let’s practice
Welcome 6th graders!
A journey soon begin through Social Science experiences!
Great job!
See you next time
Welcome 6th graders!
9TH-WHAT IS AN ATOM?-EN © 2024 by CASURID is licensed under CC BY-NC-ND 4.0
SC.912.P.8.3 Explore the scientific theory of atoms (also known as atomic theory) by describing changes in the atomic model over time and why those changes were necessitated by experimental evidence. SC.912.P.8.4 Explore the scientific theory of atoms (also known as atomic theory) by describing the structure of atoms in terms of protons, neutrons and electrons, and differentiate among these particles in terms of their mass, electrical charges and locations within the atom.
SC.912.P.8.5 Relate properties of atoms and their position in the periodic table to the arrangement of their electrons.
SC.912.P.8.12 Describe the properties of the carbon atom that make the diversity of carbon compounds possible.
SC9-WEEK12-WHAT IS AN ATOM?
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Transcript
WHAT IS AN ATOM?
Objectives
Start
Since Democritus…
Atom:
Is the basic unit of matter used to understand the physical and chemical properties of the elements of the periodic table.
Structure of an atom:
Welco me 6th gradrs!
https://www.nagwa.com/en/explainers/598170124170/
Subatomic particles:
https://twitter.com/franflipped85
Subatomic particles:
https://www.nagwa.com/en/explainers/598170124170/
Mass of subatomic particles:
Protons and neutrons have essentially the same mass, and they are both much heavier than a single electron. Protons and neutrons have a relative mass of 1, and electrons have a relative mass of 1/1840.The following table summarizes data about the subatomic particles that make up atoms.
Distribution of mass in the atom
https://www.nagwa.com/fr/explainers/598170124170/
Let's practice
Let's practice
Welcome 6th graders!
A journey soon begin through Social Science experiences!
Let’s practice
Welcome 6th graders!
A journey soon begin through Social Science experiences!
Let’s practice
Welcome 6th graders!
A journey soon begin through Social Science experiences!
Let’s practice
Welcome 6th graders!
A journey soon begin through Social Science experiences!
Great job!
See you next time
Welcome 6th graders!
9TH-WHAT IS AN ATOM?-EN © 2024 by CASURID is licensed under CC BY-NC-ND 4.0
SC.912.P.8.3 Explore the scientific theory of atoms (also known as atomic theory) by describing changes in the atomic model over time and why those changes were necessitated by experimental evidence. SC.912.P.8.4 Explore the scientific theory of atoms (also known as atomic theory) by describing the structure of atoms in terms of protons, neutrons and electrons, and differentiate among these particles in terms of their mass, electrical charges and locations within the atom. SC.912.P.8.5 Relate properties of atoms and their position in the periodic table to the arrangement of their electrons. SC.912.P.8.12 Describe the properties of the carbon atom that make the diversity of carbon compounds possible.