Silicon is lustrous and is a conductor of heat and electricity. Which class of elements could this element belong to?

A. Metal

B. Non-metal

C. Metalliod

D. All of the above

Intact cells of two unknown cell types were placed into solutions with different concentrations of NaCl. Type I cells swelled and burst in the solution with the lowest concentration of NaCl.

Which of these elements would have the lowest first ionization energy?

An imaginary gas that perfectly obeys all gas laws is called a (n) ___. a) ionic gas b) perfect gas c) ideal gas d) inert gas

What type of solution is a soft drink

An atom of iron has the atomic number 26. This means that

Which option is true about the effect of polarity on solubility? Select all that apply. Polar solutes dissolve better in water than in oil. Polar solutes have the greatest solubility in nonpolar solvents.

Which change results in a release of energy? 1. The melting of H₂O (S) 2. The boiling of water (L) 3. The evaporation of H₂0 (L) 4. The condensation of H₂0 (G)

What changes nitrogen gas in the air to nitrogen compounds that fall to the ground

Which element has an isotope mass number of 32 and is used as an ecological tracer?

Which laws can be combined to form the ideal gas law? Boyle's law and Charles's law Gay-Lussac's law and Avogadro's law Charles's law, Avogadro's law, and Boyle's law Dalton's law, Gay-Lussac's law, and Avogadro's law