Name________________________________________Period_____

AtomsandTheirParts(SubatomicParticles)

Substancesthatcontainonlyonekindofatomarecalledelements.Somefamiliarelementsareoxygen,

gold,silver,andhelium.An atomisthesmallestpartofanelementthatcanbebrokendownandstill

havethecharacteristicsofthatelement.Allatomshavethesamebasicstructure.

Withtheexceptionofhydrogen,alltheatomshavethreemainparts.Thepartsofanatomareprotons,

electrons,andneutrons.Aprotonispositivelychargedandislocatedinthecenteror nucleusofthe

atom.Allatomsofthesameelementhavethesamenumberofprotons.Thenumberofprotonsinthe

nucleusiscalltheatomicnumber andagain,isuniquetoeachelement.Adifferentnumberofprotons

wouldmeanyouhaveadifferentelement.Electronsarenegativelychargedandarelocatedinshellsor

orbitsspinningaroundthenucleus.Thenumberofprotonsandelectronscanbeequal.Thisequalityis

importantsothattheatomisneitherpositivelynornegativelycharged.Itissaidtobeneutral.Thethird

partofanatomistheneutron.Neutronsareneitherpositivenornegativeandarelocatedinthecenterof

thenucleusofanatomalongwiththeprotons.Protonsandneutronsarethemassivepartsofanatom.

Theircombinedmassesarecalledtheatomicmassofanelement.Electronsaresolightthatwesaythey

haveessentiallynomass.

Afterreadingtheabove,usethetablebelowtohelpyouunderstandthebasicsaboutprotons,

electrons,andneutrons.

Subatomic

Particle Mass Charge WhereFound

Yes No Positive Negative Neutral InsideNucleus OutsideNucleus

Proton

Electron

Neutron

Studythedrawingsandanswerthequestionsatthe bottomofthepage.

AtomA AtomB

1. HowmanyprotonsareinatomA? _______ atomB? _______

2. HowmanyneutronsareinatomA? _______ atomB? _______

3. HowmanyelectronsareinatomA? _______ atomB? _______

4. WhatistheatomicmassofatomA? _______ atomB? _______

5. WhatistheatomicnumberofatomA? ______ atomB? _______

 É



 



Legend:

Proton

Neutron

Electron



Atoms and Their Parts (Subatomic Particles), Study notes of Chemistry

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Name____________________________________ Period_

1. How many protons are in atom A? _ atom B? _

2. How many neutrons are in atom A? _ atom B? _

3. How many electrons are in atom A? _ atom B? _

4. What is the atomic mass of atom A? _ atom B? _

5. What is the atomic number of atom A? atom B? _

Identifying Atoms Worksheet:

From Elements to Subatomic Particles

DIRECTIONS: Determine the requested quantities and info about each atom.

6. Protons _ Atomic Mass _

Neutrons _ Atomic Number _

Electrons _ Element Symbol _

Element Name ______________________

Ion: cation/anion/no Charge _____

8. Protons _ Atomic Mass _

Neutrons _ Atomic Number _

Electrons _ Element Symbol _

Element Name ______________________

Ion: cation/anion/no Charge _____

7. Protons _ Atomic Mass _

Neutrons _ Atomic Number _

Electrons _ Element Symbol _

Element Name ______________________

Ion: cation/anion/no Charge _____

9. Protons _ Atomic Mass _

Neutrons _ Atomic Number _

Electrons _ Element Symbol _

Element Name ______________________

Ion: cation/anion/no Charge _____

Atoms and Their Parts (Subatomic Particles), Study notes of Chemistry

Related documents

Partial preview of the text

Download Atoms and Their Parts (Subatomic Particles) and more Study notes Chemistry in PDF only on Docsity!

Name________________________________________ Period_____

1. How many protons are in atom A? _______ atom B? _______

2. How many neutrons are in atom A? _______ atom B? _______

3. How many electrons are in atom A? _______ atom B? _______

4. What is the atomic mass of atom A? _______ atom B? _______

5. What is the atomic number of atom A? ______ atom B? _______

Identifying Atoms Worksheet:

From Elements to Subatomic Particles

DIRECTIONS: Determine the requested quantities and info about each atom.

6. Protons _____ Atomic Mass _____

Neutrons _____ Atomic Number _____

Electrons _____ Element Symbol _____

Element Name ______________________

Ion: cation/anion/no Charge _____

8. Protons _____ Atomic Mass _____

Neutrons _____ Atomic Number _____

Electrons _____ Element Symbol _____

Element Name ______________________

Ion: cation/anion/no Charge _____

7. Protons _____ Atomic Mass _____

Neutrons _____ Atomic Number _____

Electrons _____ Element Symbol _____

Element Name ______________________

Ion: cation/anion/no Charge _____

9. Protons _____ Atomic Mass _____

Neutrons _____ Atomic Number _____

Electrons _____ Element Symbol _____

Element Name ______________________

Ion: cation/anion/no Charge _____

Name____________________________________ Period_

1. How many protons are in atom A? _ atom B? _

2. How many neutrons are in atom A? _ atom B? _

3. How many electrons are in atom A? _ atom B? _

4. What is the atomic mass of atom A? _ atom B? _

5. What is the atomic number of atom A? atom B? _

6. Protons _ Atomic Mass _

Neutrons _ Atomic Number _

Electrons _ Element Symbol _

8. Protons _ Atomic Mass _

Neutrons _ Atomic Number _

Electrons _ Element Symbol _

7. Protons _ Atomic Mass _

Neutrons _ Atomic Number _

Electrons _ Element Symbol _

9. Protons _ Atomic Mass _

Neutrons _ Atomic Number _

Electrons _ Element Symbol _