Physical and Chemical Changes in Matter
Quiz
•
Science
•
8th Grade
•
Practice Problem
•
Medium
Standards-aligned
Dani Boepple
Used 33+ times
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17 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which process describes only a physical change?
Fungus decomposing organic matter
Leaves using carbon dioxide to make surgar
Plants using nitrogen to make protein
Water evaporating from salt water
Tags
112.27.b.6.C
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Researchers are investigating processes that happen during digestion.
Which answer choice describes only a physical change during digestion?
Hydrochloric acid in the stomach breaks down proteins
Chewing in the mouth breaks food into small pieces
Enzymes in saliva start the digestion of starches before food is swallowed
Bacteria in the intestines convert dietary fiber into fats
Tags
112.27.b.6.C
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Both the esophagus and the small intestine are involved in the digestion of food. The esophagus squeezes food into the stomach by wave-like muscle contractions. Peptidase enzymes in the small intestine break food molecules into smaller molecules.
Which statement best describes changes to food during digestion?
The muscle contractions result in physical changes, while the action of the peptidase results in chemical changes
The muscle contractions and the action of the peptidase both result only in physical changes
The muscle contraction result in chemical changes, while the action of the peptidase results in physical changes
The muscle contractions and the action of the peptidase both result only in chemical changes
Tags
112.27.b.6.C
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A student listed how different parts of the body work to aid in the digestion of food.
Which of the following is a chemical change that occurs to the food?
The reduction in size of food particles as food is chewed
The movement of food to the stomach after food is swallowed
The breakdown of molecules of food by enzymes and acid in the stomach
Tags
112.27.b.6.C
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Many processes occur in the digestive system.
Which process is best classified as a physical change?
Saliva converting the starch molecules in crackers into simple sugars
Digestive enzymes breaking down proteins into smaller fragments
Bacteria converting lactose into simple sugars in the intestines
Teeth grinding an almond into smaller pieces in the mouth
Tags
112.27.b.6.C
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Which of the following does NOT indicate a chemical reaction is occurring? Check all that apply.
Unknown A dissolves into Unknown B
Unknown A creates fizzing and bubbles when combined with Unknown B
Unknown A sinks to the bottom when added to Unknown B
Unknown A floats to the top when added to Unknown B
Tags
112.27.b.6.C
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What evidence can you use to infer that a chemical reaction has occurred here?
A dark solid formed on the zinc metal
The zinc metal remained silver-colored and shiny
None of these
Tags
112.27.b.6.C
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