Which statement describes a chemical property of silicon?

A) Silicon has a blue-gray color.

B) Silicon is a brittle solid at 20.°C.

C) Silicon melts at 1414°C.

D) Silicon reacts with fluorine.

Which type of radiation is the main hazard during radiological procedures? alpha beta gamma positron

Which compound is a member of the same homologous series as C3H8? (1) CH4 (3) C5H8 (2) C4H8 (4) C6H10

Which is the first duty of a first responder after arriving at a crime scene? A) get a search warrant B) search for evidence C) package evidence D) render aid and assistance

Which of the following choices best describes the behavior of light as it moves from air to glass? 1-Some of the light waves bounce off the glass and reflect at an equal angle, but in new direction.

A group of engineers run a trial test on a space probe built for measuring the surface temperature of the sun. After the trial, the engineers realize that the probe melted and failed to collect the needed data. What should the engineers do next?

The compound h3po4 is named: a. nitric acid. b. sulfuric acid. c. phosphoric acid. d. ethanoic acid.

What does charles law state

Hf is a stronger acid than nh + 4. which base would be stronger: f - or nh3? 1. f - 2. both bases would be equal in strength. 3. nh3 4. cannot tell from the information given. 5. neither f1 - nor nh3 would be bases.

The concentration of commercially available concentrated nitric acid is 70.0 percent by mass, or 15.9 M. Calculate the density and molality of the solution.

Whats 2 properties of iron?