Which of these is a property of acids?
a. they produce hydrogen gas when reacted with metals
b. they taste bitter
c. they feel slippery
d. they turn litmus paper blue

Achef makes salad dressing by mixing oil, vinegar, and spices, as shown. which type of matter is the salad dressing?

2points what is the job of a scientist? a. to answer ethical questions. b. to write laws based on his or her knowledge. c. to ask and answer scientific questions. d. to ignore facts that do not support his or her theory.

Non renewable resources like petroleum eventually