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Name__________________________
Chemistry Worksheet
Fill in the blank
Atom
Electrons
Matter
Element
Energy
Isotope
Ion
Protons
Molecule
Neutrons
1. ____________ An electrical charged atom or group of atoms.
2. ____________ Anything that takes up space and has mass (weight)
3. ____________ A unique substance composed of atoms having the same atomic number.
4. ____________ Negatively charge particles, forming part of an atom.
5. ____________The ability to do work
6. ____________The smallest particle of an element that retains the properties of the element.
7. ____________The particle of a compound, formed when atoms combine chemically
8. ____________Positively charged particles forming part of an atom.
9. ____________Non-charged particle in the nucleus.
10. ____________Atoms with different masses but same atomic number
Complete the table
Particle
Location
Electrical Charge
Proton
Neutron
orbit
Insert the chemical symbol in the answer blanks for the following elements
1._____Oxygen
4. ____Iodine
7._____ Calcium
2._____Carbon
5. ____Hydrogen
8._____Sodium
3._____Potassium
6. ____Nitrogen
9_____Phosphorous
Use a periodic chart to complete the following table by filling in the missing parts.
Remember electrons fill the first orbit and than the second orbit, etc. As a result the outer
orbits may be empty.
Electron Distribution
Chemical Symbol
Atomic Number
Atomic Mass
Orbit
Orbit
Orbit
Orbit
1
2
3
4
2
6
0
0
1
12
N
23
12
17
39
Use the electron distribution columns from the above table to complete the following
table concerning IONIC BONDS
Chemical Symbol
Loss/gain of electrons
Electrical Charge
H
Na
Mg
Cl
Use the electron distribution columns from the above table to complete the following
table concerning COVALENT BONDS
Chemical Symbol
Number of electrons shared
Number of bonds made
H
C
N
O