When a strip of zinc metal is added to a test tube of hydrochloric acid, the liquid forms bubbles, and the test tube feels hot. The bubbles are a result of the formation of hydrogen gas. What does the hot test tube indicate?
A.
Hydrogen gas absorbs heat.
B.
The reaction releases heat.
C.
A chemical change has been reversed.
D.
The reaction absorbs heat.
Answers: 1
Another question on Biology
Biology, 22.06.2019 06:00
What element is able to combine with itself and hydrogen to form large molecules ?
Answers: 1
Biology, 22.06.2019 07:30
The picture represents a structure of the respiratory system. which is the function of this structure? to bring air into the body to exchange oxygen with carbon dioxide to carry air to the lungs to release oxygen from the body
Answers: 1
Biology, 22.06.2019 08:30
Anormal appearing couple is found to be heterozygous recessive for albinism both have the genotype aa the gene responsible for albinism is recessive to the normal pigment-producing gene what are the changes of their children being albino
Answers: 2
Biology, 22.06.2019 10:30
What is the best conclusion based on this data? the hypothesis was not supported because the data indicated that fertilizing plants does not improve plant growth. the hypothesis was supported; to get the best growth, use 5 milliliters of fertilizer per plant. the hypothesis was not supported; the data indicated that too much fertilizer can inhibit plant growth. the hypothesis was supported; to get the best growth, use 15 milliliters of fertilizer per plant.
Answers: 1
You know the right answer?
When a strip of zinc metal is added to a test tube of hydrochloric acid, the liquid forms bubbles, a...
Questions
Business, 15.04.2020 22:24
Social Studies, 15.04.2020 22:24
Mathematics, 15.04.2020 22:24
History, 15.04.2020 22:24
Biology, 15.04.2020 22:24
