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WorksheetsFall Semester Final
Total questions: 60
Worksheet time: 2hrs 0mins
In an oven, electrical energy is transformed to _________________ energy.
Thermal
Solar
Electrical
None
Which kind of energy change occurs when a candle is burning?
Chemical to light.
Light to electrical.
Solar to heat.
Chemical to electrical.
Can you destroy energy?
Yes
No
Which of the following best describes the energy transformations that occur when a flashlight that runs on batteries is turned on?
chemical → light → electrical
electrical → light → chemical
light → electrical → chemical
chemical → electrical → light
Can you create energy?
Yes
No
The Theory of the Conservation of Energy states -
Energy can be created, just not destroyed. It changes its form from one type to another.
Energy can never be created nor destroyed. It can only change its form from one type to another.
The total energy in our Universe changes, as different forms of energies can be transformed from each other under certain circumstances.
Energy transformations do not passively occur in our lives, rather we actively make use of energies and transform energies.
Metal
Nonmetal
Metalloid
Metal
Nonmetal
Metalloid
Metal
Nonmetal
Metalloid
A(n) is the ability of a substance to reflect light.
Luster
Ductility
Insulators
Semiconductor
Which element category could have the characteristic of brittle? Choose the best answer.
Metal
Nonmetal
Metalloid
Metalloid and Nonmetal
Frank has an eraser. It has a mass of 4 g and a volume of 2cm3. What is the density?
2 g/cm3
4 g/cm3
8 g/cm3
2 g/in3
Calculate the density of the object below if it has a mass of 3g. (Hint: you need to find the volume.)
60 g/cm3
3 g/cm3
20 g/cm3
0.05 g/cm3
Find the volume of a liquid that has a mass of 10 grams and a density of 5 g/mL.
2 mL
0.5 mL
50 mL
0.2 mL
If an object has a density of 3.6 g/mL and you put it into water (density of 1 g/mL), will it sink or float?
If an object has a density of 0.6 g/mL and you put it into water (density of 1 g/mL), will it sink or float?
The equation for calculating density is?
density = volume/mass
density = mass/volume
density = mass x volume
density = mass + volume
What is a chemical change?
the formation of a new substance with different properties; cannot be undone by physical means.
a representation of a compound in which the elements are represented by their symbols and subscripts represent the number of atoms of each element
change which alters the physical properties of a substance without changing its identity
the solid that is formed as a result of a chemical change
What is an element?
the formation of a new substance with different properties; cannot be undone by physical means
a pure substance made by chemically combining two or more elements; represented by a chemical formula
a substance that is not mixed with any other substance
a pure substance that cannot be broken down chemically into simpler substances
What is a change which alters the physical properties of a substance without changing its identity
Physical Change
Chemical Change
Compound
Element
Gold (Au) would be considered a(n)
element
compound
Sodium chloride (NaCl) was classified a(n)
Element
Compound
What is the definition of matter?
A substance made up of at least two different pure substances
A type of mixture that is made up of two substances which keep their own properties
Anything that occupies space and has particles
A type of mixture that is uniform in composition
What are two the two types of mixtures?
elements
compounds
heterogenous
homogenous
What are two the two types of pure substances?
elements
compounds
heterogenous mixtures
homogenous mixtures
Compounds are make up of.....
One element
No elements
Multiple types of elements
Is melting butter for popcorn a chemical or physical change?
chemical
physical
What sign of a chemical change is evident in a fire?
color change
producing heat
light produced
all of the above
What is the main difference between a chemical change and a physical change?
chemical changes the substances identity; physical does not
physical changes the substances identity; chemical does not
chemical changes what it looks like; physical does not
physical changes everything; chemical only changes some things
What is the definition of balanced forces?
Two forces acting in opposite directions on an object, and they are not equal in size.
Two forces acting in the same direction on an object, and they are equal in size.
Two forces acting in opposite directions on an object, and one is larger than the other.
Two forces acting in opposite directions on an object, and they are equal in size.
What is the definition of unbalanced forces?
Forces that are equal in size and opposite in direction
Forces that are not equal in size and same in direction
Forces that are not equal in size and opposite in direction
Forces that are not equal in size and random in direction
What is any push or pull called?
Force
Energy
Speed
Acceleration
What is the Net Force acting on the box in this picture?
10 N to the Left
10 N to the Right
60 N to the Left
60 N to the Right
What is the Net Force acting on the box in this picture?
30 N to the Right
30 N to the Left
70 N to the Right
70 N to the Left
What is the Net Force and the direction of the object's movement as a result of the net force?
11N, Right
11N, Left
1N, Left
1N, Right
What FORCE is keeping Vanessa from sliding down this grassy hill?
Unbalanced
Friction
Magnetism
Gravity
