Drag each tile to the correct location on the table. Classify the sentences based on whether they describe a physical change or a chemical change.
Bubbles form when a can of soda is
opened.
Bubbles form when baking soda is
added to vinegar.
The shape of an ice cube kept on a
kitchen counter changes.
The shape and color of a sugar cube
change on burning.
Bubbles are seen in water when it is
heated.
Physical Change
Chemical Change

tracks, burrows, eggshells, nests, tooth marks, or gastroliths

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.