8 multiple choice 1 point lee is in a contest to build a bridge that will hold a large weight. he has to…

8 multiple choice 1 point lee is in a contest to build a bridge that will hold a large weight. he has to determine which materials he will use to build the bridge. what should he do to determine the correct materials to use? a. ask someone b. observe materials d. measure the properties of several materials c. use whatever he can find 9 multiple answer 5 points a chemical change results in a new product. review the list of objects below. select the ones that describe chemical changes. b. souring milk h. salt and sand a. ice melting i. a rotting apple d. chopping wood c. rust on iron pipes e. green tarnish on a copper statue f. frying an egg g. breaking glass

8 multiple choice 1 point lee is in a contest to build a bridge that will hold a large weight. he has to determine which materials he will use to build the bridge. what should he do to determine the correct materials to use? a. ask someone b. observe materials d. measure the properties of several materials c. use whatever he can find 9 multiple answer 5 points a chemical change results in a new product. review the list of objects below. select the ones that describe chemical changes. b. souring milk h. salt and sand a. ice melting i. a rotting apple d. chopping wood c. rust on iron pipes e. green tarnish on a copper statue f. frying an egg g. breaking glass

Answer

Brief Explanations:

For question 8, measuring material properties helps in choosing the right ones for a load - bearing bridge. For question 9, chemical changes result in new substances. Souring milk, rust on iron pipes, green tarnish on a copper statue, a rotting apple, and frying an egg are chemical changes as new substances are formed. Ice melting, chopping wood, breaking glass, and salt and sand are physical changes.

Answer:

  1. D. Measure the properties of several materials
  2. B. Souring Milk, C. Rust on iron pipes, E. Green tarnish on a copper statue, I. A rotting apple, F. Frying an egg