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Physical Science Semester 2 Final Review
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This is a symbol for what type of nuclear radiation particle?
Beta
This is symbol for what type of nuclear radiation particle?
Alpha
What is a combination of two or more substances?
Mixture
What is defined as matter with a fixed composition?
Substance
Can substances be broken down using a chemical process? Why?
Yes
Can substances be broken down using a physical process? Why?
No
What state of matter does not have a definite shape or volume?
Gasses
During conduction, how is energy transferred?
particles collide
What is the measure of amount of kinetic energy of particles?
Temperature
What type of thermal transfer drives plate tectonics?
convection
How does an exothermic reaction make the surface of the object feel? Why?
Hot - because it releases heat
Balance this equation
answer on board
What are the products of combustion?
Carbon Dioxide and Water
What will speed up a chemical reaction?
Adding heat Stirring Adding a catalyst
Write the formula for Cobalt (II) Phosphate
Co3(PO4)2
Write the formula for Arsenic Pentoxide.
AsO5
Write the name for the following.
Dinitrogen Monoxide
What is the name for the following compound?
Aluminum Sulfide
Why do you use roman numerals when naming an ionic compound?
when the cation can be found in groups 3-12
Why do atoms bond?
stability - to have 8 valence electrons
How do I determine if the bond is ionic or covalent?
Ionic bonds - elements on the left and right side of the staircase. Covalent bonds - both on the right side of the staircase
How do I calculate the mass number?
protons + neutrons
This is a Bohr diagram for what element? How many protons, neutrons, electrons, and valence electrons does it have?
Sulfur Protons - 16 Neutrons - 16 Electrons - 16 Valence Electrons - 6
If an atom has 20 protons, 20 electrons, and 21 neutrons, what is the mass number? What is the element?
Mass number - 41 Element/Atomic number - Calcium
Define ion.
atoms with a different number of electrons - have a positive or negative charge
Define isotope.
atoms with a different number of neutrons and different mass
List 3 physical properties. List 3 chemical properties.
Physical Properties: Color, Mass, Boiling Point Chemical Properties: Ability to Rust, Reactivity, Flammability
List 3 chemical changes
Rotting Burning Rusting
Heat flows in what direction?
high to low
What is deposition?
Gas to a solid
What is sublimation?
solid to a gas
Calculate the heat required to head 250 grams of water from 21 C to 53 C. The specific heat capacity of water is 4.18 J/g C. Use the equation - Q=mC(Temp Final - Temp Initial)
33,440 J
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