Title: Default for 2020SCI33C
Course: 2024 Science 3

Q: Heartburn is:
- Irritation or burning of the heart
- A symptom of Acid Reflux
- An emotional breakdown
A: A symptom of Acid Reflux

Q: Acid Reflux is:

NOTE: More than one answer
- when stomach acid flows up the esophagus
- a mixture of acetic acid
- when a person vomits
- GERD when it is more serious
A: when stomach acid flows up the esophagus; GERD when it is more serious

Q: Why is it called heartburn?
- Because the heart has a high temperature
- Because of combustion
- Because the discomfort is felt in the heart area.
A: Because the discomfort is felt in the heart area.

Q: What are other symptoms of Acid Reflux?

Note: Mark all that apply
- Headaches
- Bloating
- Choking
- Nausea
- Sore throat
- High blood pressure
- Difficulty swallowing
A: Bloating; Nausea; Sore throat; Difficulty swallowing

Q: Prolonged use of antacids is a sign of good health.
- True
- False
A: False

Q: Antacids are bases made up of salts of magnesium, calcium, sodium,

or aluminum.
- True
- False
A: True

Q: Acid rain is precipitation that contains components like...
- carbon dioxide and oxygen.
- sulfuric or nitric acid.
- calcium carbonate and glucose.
A: sulfuric or nitric acid.

Q: Acid can cause corrosion in structures and metals.
- True
- False
A: True

Q: Acid rain is healthy for plants, trees, soils, lakes and rivers.
- True
- False
A: False

Q: Bodies of water become uninhabitable for certain species with acid rain.
- True
- False
A: True

Q: Sulfur dioxide and nitrogen oxides are healthy for us.
- True
- False
A: False

Q: Jet streams can
- are made for wind surfing.
- make acid rain travel long distances.
- make acid rain remain in one place.
A: make acid rain travel long distances.

Q: Sulfur dioxide and nitrogen oxide that are released into the atmosphere are produced by...
- power plants.
- vehicles.
- refineries.
- solar panels.
A: power plants.; vehicles.; refineries.

Q: The coronavirus pandemic has reduced the incidence of acid rain.
- True
- False
A: True

Q: Synthetic Polymers are made of varied forms of plastic.
- True
- False
A: True

Q: Polymer that forms plant cell walls.
- lignin
- cellulose
- monomer
- chitin
A: cellulose

Q: PVC stands for...
- Polyvinyl Alcohol
- Polyethilene Chloride
- Polyvinyl Chloride
- chitin
A: Polyvinyl Chloride

Q: Which of the following are Natural Polymers?
- Wood
- Plastic
- Rubber
A: Wood; Rubber

Q: Large molecules formed by many chained monomers.
- Polymers
- Monomers
- Ethenes
A: Polymers

Q: What is the quality of bending?
- Rigidity
- Flexibility
- Durability
A: Flexibility

Q: Indicate intermolecular forces that determine flexibililty and rigidity.
- synthetic polymers
- natural polymers
- cross-linking
A: cross-linking

Q: Transparent is the same as opaque.
- True
- False
A: False

Q: Soil is a renewable resource, although if it is damaged it takes a long time to replace.
- True
- False
A: True

Q: Every person in the U.S. uses about __________ of minerals every year for a range of products, like TVs, cell phones, and computers.
- 2 kilograms
- 20,000 kilograms
- 2,000 kilograms
- 2,000,000 kilograms
A: 20,000 kilograms

Q: Which common object is made mostly or entirely from nonrenewable resources?
- cars
- jewelry
- cell phones
- all of the above
A: all of the above

Q: Which common object is made mostly or entirely from renewable resources?
- houses
- electricity
- paper
- all of the above
A: paper

Q: People depend on ____________ for almost everything that keeps us fed, sheltered and entertained.
- natural resources
- soil
- the atmosphere
- the water cycle
A: natural resources

Q: Which of these examples are natural resources?
- cotton clothing
- fossil fuels
- iron ores
- water
- houses
- trees
A: fossil fuels; iron ores; water; trees

Q: A natural resource is anything in nature that humans need.
- True
- False
A: True

Q: Many objects humans regularly use are made from a variety of natural resources.
- True
- False
A: True

Q: A single type of natural resource can only be used in one way.
- True
- False
A: False

Q: Living things are natural resources.
- True
- False
A: True

Q: Which of the following is/are acidic in nature?
- grape juice
- lemon juice
- vinegar
- all of the above
A: all of the above

Q: Which of the following is the correct option: hydrogen, hydroxide, peroxide?

pH is a measure of the ____________ ion concentration of a solution.
A: hydrogen

Q: The pH of the environment isimportant for living things, because most can survive only within a relatively narrow range of acidity.
- True
- False
A: True

Q: When an acid is dissolved in water, the pH will be more than that of pure water.
- True
- False
A: False

Q: If a material has a pH of 9.3, is it acidic or basic?
- basic
- acidic
A: basic

Q: The lower the pH value, the larger the concentration of hydrogen ions.
- True
- False
A: True

Q: The more acidic a solution, the greater will be the concentration of hydrogen ions, and the lower will be the pH.
- True
- False
A: True

Q: A solution having a pH of zero is neutral.
- True
- False
A: False

Q: If the pH of black coffee in a cup is 4.89, it will be alkaline in nature.
- True
- False
A: False

Q: Which of the following properties characterizes bases?
- ability to react with metals
- sour taste
- bitter taste
- two of the above
A: bitter taste

Q: Match the type of Energy with its correct definition.
- Energy that an object possesses due to its motion/movement. | Kinetic Energy
- The amount of energy held by an object due to its position in relation to the ground. | Gravitational Potential Energy
- The energy stored in an object due to its capacity to return to its original shape after being stretched or compressed. | Elastic Potential Energy
- Energy that is stored in the bonds of an atom and can be released by either exothermic or endothermic reactions. | Chemical Potential Energy
- Energy that is sometimes visible and travels through waves or particles called photons. | Radiant
- Energy that happens when the temperature of a substance increases, when there are more collisions between atoms and molecules. | Thermal

Q: The transfer of heat that happens in fluids and gases because molecules in them are free to circulate is called...
- Conduction
- Convection
- Radiation
- Chemistry
A: Convection

Q: Energy is expressed in....
- Kilometers
- Seconds
- Newtons
- Joules
A: Joules

Q: We can create energy through radiation.
- True
- False
A: False

Q: We can transform wind power into electricity.
- True
- False
A: True

Q: Aeolian Energy is non-renewable.
- True
- False
A: False

Q: The Law of [...]____________ of Energy States that energy cannot be[...]_______ nor [...]_________, it can only be [...]___________.
A: Conservation; created; destroyed; transformed

Q: Match the concept to the correct formula
- K.E. = 1/2 m v^2 | Kinetic Energy
- G.P.E.=mgh | Gravitational Potential Energy
- W = Fd | Work
- P=W/t | Power

Q: Match the unit of measurement to the correct concept.  How is each concept expressed?
- Energy and Work | Joules
- Power | Watts or Joules per Second
- Force | Newtons
- Distance or Height | Meters
- Time | Seconds
- Mass | Kilograms
- Velocity | Meters per Second
- Gravity | Meters per Second Squared

Q: When an object has the ability to return to its original shape after being stretched or compressed it has.......
- Elastic Potential Energy
- Chemical Potential Energy
- Kinetic Energy
- Gravitational Potential Energy
- Thermal Energy
A: Elastic Potential Energy

Q: The energy stored within the bonds of atoms and molecules is called...
- Chemical Potential Energy
- Elastic Potential Energy
- Gravitational Potential Energy
- Kinetic Energy
- Aeolian Energy
A: Chemical Potential Energy

Q: We can say that work has been done when a force is exerted on an object that causes it to move.
- True
- False
A: True

Q: The term ____ is used to describe the rate at which work is done.
- work
- power
- energy
- aeolian
- collision
A: power

Q: Heat is the most common form of energy degradation.
- True
- False
A: True

Q: The phenomenon where energy is dispersed and has less capacity to do work is explained by the...
- Principle of Energy Degradation
- Collision Theory
- Law of Conservation of Energy
A: Principle of Energy Degradation