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WorksheetsModule 1 Review
Total questions: 40
Worksheet time: 34mins
Which of the following describes a mixture of vinegar and oil?
Homogeneous mixture: the components are uniformly mixed
Heterogenous mixture: the components are uniformly mixed
Homogenous mixture: the components are not uniformly mixed
Heterogenous mixture: the components are not uniformly mixed
Which of the following is a physical change?
A nail turns orange due to rusting
Bubbles form when vinegar is added to baking soda
A metal melts when heat is applied
An apple rots when left out for 3 months
A chemical engineering firm has been hired to develop a new hair dye. The client has provided the firm with a list of constraints for the hair dye. Which of these would be a constraint that could be on the list?
The packaging must be appealing to a wide customer base
The hair dye must provide hair protection against antiaging sun rays
The hair dye must be effective for at least 6 months
The packaging must be made from at least 30% recycled materials
Silver and Chlorine are two separate elements that when chemically combined make Silver chloride. Which statement describes properties about all three substances?
Silver and chlorine are heterogenous mixtures and silver chloride is a homogenous mixture
Silver and chlorine cannot be separated but silver chloride can be separated by physical means
Silver, chlorine, and silver chloride are pure substances, but silver chloride has different chemical properties than silver or chlorine have.
Silver, chlorine, and silver chloride are pure substances and silver chloride has the same physical and chemical properties as iron or sulfur
A group of students has unknown samples of chemicals that need identification. How can the students match the substances with each unknown sample?
Identify using their physical properties
Identify using chemical properties
They cannot identify these substances
Both A and B
A drawback of a design is weighed against a criterion or constraints benefits. This would be
Feedback
Constraint
Criteria
Tradeoff
Which of the following would sink in water?
Potassium Density= .89 g/mL
Radon Density= 0.009 g/mL
Titanium Density=4.5 g/mL
Sodium Density= 0.9 g/mL
Exothermic is a type of reaction that releases heat when the reaction takes place. What type of change is this?
chemical
phsyical
Koolaid mix dissolves when placed in water. The mix would be classified as the …
solvent
reactant
solute
mixture
Which of the following is the ability of a metal to be hammered?
Malleability
Ductility
Conductivity
Reactivity
Which of the following is the ability to pass an electric current?
Malleability
Solubility
Conductivity
Reactivity
Which of the following describes a pure substance combining to make another pure substance?
A homogenous mixture forms when salt and water mix
Oxygen combines with hydrogen through an electric current to create water
The temperature increases to melt an ice cube
A mixture of vinegar and oil cool to create to separate layers
In the lab you dissolve sugar into water, but then you need to separate them again. What separation technique allows you to do this?
Filtration
Evaporation
Centrifugation
Chromatography
You use a funnel and filter paper to filter the rocks out of water, so you are left with the water in one container and salt in the other. This is an example of …
Evaporation
Decanting
Filtration
Chromatography
Which of the following describes a mixture being separated into its components?
A popsicle melts
Iron reacts with oxygen to form a rusted nail
The electricity splits carbon dioxide into carbon and oxygen
A black marker is separated into different colors using chromatography
Which of the following is a chemical change?
heating water
black ink separating
ice changing to water
banana rotting
I have 2 substances in the lab that were mislabeled, they have the same density, and same properties. These substances are…
the same
from similar groups on the periodic table
related
not correlated
Macroscopic level would be
what you see with your eyes
particle diagram level
Microscopic level would be
what you see with your eyes
Particle diagram level
Which diagram represents an element?
Diagram (a)
Diagram (b)
Diagram (c)
None of the diagrams represent the parts of an element.
Which of the following represents a compound?
Diagram (a)
Diagram (b)
Diagram (c)
All of the diagrams represent the parts of a compound.
Which diagram represents a homogeneous mixture?
Diagram (a)
Diagram (b)
Diagram (c)
None of the diagrams represent the parts of a mixture.
What type of matter is shown in this particle diagram?
Element
Compound
Mixture of Elements
Mixture of Compounds
Mixture of Elements and Compounds
What type of matter is shown in this particle diagram?
Element
Compound
Mixture of Elements
Mixture of Compounds
Mixture of Elements and Compounds
This picture of oil and water is a(n)
Element
Compound
Heterogeneous mixture
Homogeneous mixture
The formula C8H10N4O2 represents
Element
Compound
Heterogeneous mixture
Homogeneous mixture
Which beaker contains only one type of element?
A
B
C
D
Which state of matter does this picture show?
Solid
Liquid
Gas
Is this an example of a physical or chemical change?
physical
chemical
Is this an example of a physical or chemical change?
physical
chemical
In this example, what is the evidence a chemical change has occurred?
volume is increased
no energy is released
gas is being released
a precipitate has formed
Wood is chopped into small pieces. Then, it is burned to cook food. This is an example of a ____ change followed by a ____ change.
chemical, physical
physical, chemical
physical, physical
chemical, chemical
What type of change has occurred?
Chemical
Physical
Time, budget, and safety are almost always considered to be ________________.
Trade-offs
Criteria
Constraints
Efficiency
"The vehicle needs to go straight" is an example of...
Criteria
Constraints
Trade off
Research
Problem Statement
"We only have certain materials that we can use" is an example of...
Criteria
Constraints
Trade off
Research
Problem Statement
