Question

in each case, decide whether the property measured was a chemical or physical property of x, if you can. if you dont have enough information to decide, choose cant decide in the third column.

property	experiment	physical or chemical?

chemical
(cant decide) |

d

a sample of x is carefully weighed and put inside a vented flask. water is added to the flask until it just covers the sample, and the volume of sample and water is recorded. then the sample is removed and the volume of water alone recorded. from the mass of the sample and the difference in volumes, the value of d may be calculated.

physical

chemical
(cant decide) |

Explanation:

For the first experiment (R):

The experiment involves the tendency of reagent O to react with X, which is a chemical property (reactivity). So the property measured (R) is a chemical property.

The experiment measures the volume and mass of the sample to find density (D), which is a physical property (no chemical change occurs, just measuring mass and volume). So the property measured (D) is a physical property.

Answer:

chemical

For the second experiment (D):