TEKS Grade 7 Science - 7.6 - Diagnostic Physical and Chemical Change
Quiz by Texas Education Agency
Grade 7
Science (2017)
Texas Essential Knowledge and Skills (TEKS)
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10 questions
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- Q1An ice cube is put into a heated pan. What will MOST LIKELY happen to the molecules in the ice as the ice is heated?The molecules will begin to move faster.The molecules will begin to move slower.The molecules will begin to condense in the air.The molecules will begin to increase in density.30s7.6
- Q2Which shows one example of a physical change and one example of a chemical change?freezing water and burning coaldissolving powder and shredding paperboiling water and melting waxrusting iron and baking a cake30s7.6
- Q3Many processes occur in the digestive system. Which process is best classified as a physical change?Bacteria converting lactose into simple sugars in the intestinesSaliva converting the starch molecules in crackers into simple sugarsDigestive enzymes breaking down proteins into smaller fragmentsTeeth grinding an almond into smaller pieces in the mouth30s7.6
- Q4A change in any physical property of a substance, but not in the substance itself. Chemical bonds are not broken or formedPhysical PropertyChemical ReactionPhysical changeChemical Property30s7.6
- Q5A change of one substance into another substance. Chemical bonds are broken or new bonds are formed.Physical ChangeChemical PropertyPhysical PropertyChemical reaction30s7.6
- Q6Which of these is an example of a new substance being formed?a nail rustinga wall being paintedpaper being foldedwater changing to steam30s7.6
- Q7Which of the following is a physical change?paper being cutmixing baking soda and vinegarsoured milktarnishing silver30s7.6
- Q8What is the difference between a chemical and a physical change?During a chemical change, the substance stays the same.A chemical change does not produce a new substance, and a physical change DOES produce a new substanceA chemical change is irreversible and a physical change is reversibleA chemical change does not change the arrangement of atoms and a physical change DOES change the arrangement of atoms.30s7.6
- Q9If there is a change in color, production of light, production of heat, production of gas, production of smell, or formation of a new substance.physical changechemical change30s7.6
- Q10What does it mean when there is a physical change?Matter has changed from one substance into another.A new substance has been formed.Matter has changed on the molecular level.Matter has changed size, shape, or form.30s7.6