Biology, 01.12.2020 19:30 tai1611

To classify an unknown substance as a metal or a nonmetal, a group of students prepared the table shown. The table compares the properties of four known substances to the properties of the unknown substance.
Substance Substance Type State at Room Temperature Reaction with Water Reaction with Oxygen Electric Conductor
Sodium
Metal
Solid
Violent release of gas
Yes
White solid
Zinc
Metal
Solid
None
White solid
Yes
Nitrogen Nonmetal
Gas
None
Reddish-brown gas
No
Sulphur Nonmetal
Solid
None
Colorless gas
No
Unknown
Unknown
Solid
None
Yes
Brown solid
On the basis of the table, the students concluded that the unknown substance is most likely a metal.
What is most likely the reasoning the students used to classify the unknown substance as a metal?
A. The unknown substance reacts with oxygen.
OB. The unknown substance conducts electricity.
O C. The unknown substance does not react with water.
O D. The unknown substance is a solid at room temperature.

To classify an unknown substance as a metal or a nonmetal, a group of students prepared the table s

Answers: 1

Show answers

Another question on Biology

Biology, 22.06.2019 01:00

Where do the respiratory and circulatory systems meet? a. in the heart b. in the muscles c. in the lungs d. in the brain

Answers: 2

Answer

Biology, 22.06.2019 01:50

It is believed that europa, one of jupiter’s moons has an ocean beneath its surface. based on how earth’s oceans and atmosphere are believed to have formed, what can be said about europa’s supposed ocean? the arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced , similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s .

Answers: 1

Answer

Biology, 22.06.2019 02:20

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?

Answers: 3

Answer

Biology, 22.06.2019 05:40

Benito is doing research on the effects of florida's elevation on its climate. his notes include the following: 1. the average elevation of florida is 30 m above sea level. 2. the highest point in florida is britton hill, which is 105 m above sea level. 3. the change in temperature from 0 m to 1,000 m is 7 °c. what can benito conclude about the effects of florida's elevation on its climate? a.) florida typically experiences cold temperatures and temperature changes within a narrow range. b.) florida typically experiences cold temperatures and temperature changes within a broad range. c.) florida typically experiences warm temperatures and temperature changes within a narrow range. d.) florida typically experiences warm temperatures and temperature changes within a broad range.

Answers: 1

Answer

You know the right answer?

To classify an unknown substance as a metal or a nonmetal, a group of students prepared the table sh...

Questions