Physical And Chemical Change: Question Preview (ID: 24993)


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Julie blows a balloon up and then slowly lets out the air until it is flat. This change in size is a ______________change
a) matter b) physical c) chemical d) scientific
John is lighting a campfire. When John uses a ________________to start the fire he is creating a chemical change.
a) log b) match/ligher c) leaf d) stick
Joey showed his cousin a picture of melting ice to represent a chemical change. Was Joey correct in his example?
a) Yes b) No c) Neither answer is correct d) There is not enough information to answer the question
A change in size, shape, or state is a ______________________ change.
a) scientific b) chemical c) physical d) None of the answers are correct
When salt is added to water is dissolved causing a _______________change.
a) physical b) chemical c) solution d) none of the answers are correct
Nicole's silverware was stored in her closet for years. When she opened the box up she noticed that they were tarnished. This tarnished indicates a _____________change.
a) rusting b) chemical c) physical d) None of the answers are correct
Emily opened her lunch box to find that her mom packed her a banana. The yellow banana has turned a dark brown. Emily has found that her banana has ________________.
a) tarnished b) rusted c) rotted d) None of the answers are correct
A change in color, odor, temperature, an substance is a ________________change.
a) chemical b) scientific c) physical d) None of the answers are correct
Shawn goes to his truck to get some metal staples. He notices that the bucket they were in has collected some water. He removes the staples from the water and lays them out to dry. After a while he notices a chemical change. What could this be?
a) The bucket has become shiny b) The water has evaporated c) The staples have rusted d) None of the above are correct
Shawn could have prevented the rusting by wiping the staples off with a towel and not allowing them to be exposed to ________________________.
a) His truck b) The oil from his fingers c) The oxygen in the air d) None of the answers are corrrect
John wants to see if aluminum nails will rust. He leaves them in the water for 24 hours and then takes them out and leaves them in the sun and dry. He doesn't notice any chemical reaction because aluminum doesn't_______________
a) Bend b) Rust c) Tarnish d) None of the answers are corrrect
When two chemicals are mixed it is called a _____________________ change.
a) chemical b) solution c) physical d) None of the answers are correct
Austin adds chlorine to his fish tank hoping that it will make it safe for the fish to swim. Austin is creating a _________________change in his fish tank.
a) solution b) physical c) chemical d) None of the answers are correct
Johan uses sandpaper to smooth the sculpture he made. Johan is creating a ________________change.
a) chemical b) physical c) solution d) None of the answers are correct
When copper is exposed to saltwater it turns a greenish color. What is this chemical change called?
a) rust b) tarnish c) mold d) None of the answers are correct
A good scientist should observe their experiments are often as possible to assure _________results.
a) unreliable b) scattered c) accurate d) None of the answers are correct
Burning wood is a __________________change?
a) Chemical b) Physical c) Solution d) None of the answers are correct
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