Methane (ch4) and the perchlorate ion (clo-4) are both described as tetrahedral. what does this indicate about their bond angles?

Sodium chloride (table salt) is a. element b. atom c. electron d. molecule

What's a system that works with bones to allows body movement?

True of false metals like copper are sometimes used to fill cavities in teeth

Why does magnesium fluoride conducts electricity when molten or in aqueous solution?

A plant is made of various chemicals true or false

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

What determines the horizontal arrangement of the periodic table?