Atoms
Bonds
Energy
Chemical Equations
Random
100
This subatomic particle has a positive charge.
A proton
100
A bond between a metal and a nonmetal is what kind of bond?
An ionic bond.
100
What is kinetic energy?
Energy that results from an object in motion.
100
Where are our products in a chemical reaction?
The right side of the formula.
100
What type of wave requires a medium?
Mechanical wave.
200
What two subatomic particles make up an atom's atomic mass?
Neutrons and protons.
200
When would you know to draw a double covalent bond?
When you have two pairs of unpaired electrons.
200
What is gravitational energy?
Energy that is gained the farther you move away from Earth.
200
What is the law we follow that explains why we must have an equal number of elements on both sides?
Law of Conservation of Mass
200
If Sodium bonded with Chlorine, what kind of bond would that be?
An ionic bond
300
If an element has a charge of +2, what has happened to its electrons?
It has lost two electrons.
300
If Hydrogen was bonded to Oxygen what kind of bond would that be?
A covalent bond.
300
Name two kinds of potential energy.
Gravitational, Elastic, Chemical
300
What is one unique thing about a combustion reaction?
Oxygen gas on reactant side, carbon dioxide and water on the product side.
300
What is one difference between nuclear fusion and fission?
Fusion is unstable, occurs in nature, produces more energy, atoms come together. Fission is more stable, man-made, less energy, atoms split apart.
400
What subatomic particle is smaller than an electron?
A quark
400
Which elements are more likely to GAIN electrons?
Elements on the RIGHT side of the periodic table.
400
Give two examples of chemical energy.
Food, batteries, coal.
400
What is the general formula for a single replacement reaction?
A + BC -> B + AC
400
How is light divided into categories on the electromagnetic spectrum?
By frequency and wavelength.
500
When looking at an isotope of an element, what two things do we know have changed?
Number of neutrons and atomic mass.
500
Why do elements bond with each other?
Attempt to be more stable.
500
If you are eating an apple and then riding your bike, what are the two forms of energy found in the example? (Be specific)
Chemical --> Mechanical
500
Can you change the subscript when balancing a chemical equation? Why not?
No; if you changed the subscript you would change the entire compound.
500
What do we call an compound (more than one element) that also has a charge to it?
Polyatomic ion.
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