What is the density of the table tennis ball? Record your answer to the nearest hundredth

Who arranged the elements according to atomic mass and used the arrangement to predict the properties of missing elements?

Why do liquids and gases take the shape of their containers

If the concentration of h2 is doubled, will the reaction rate quadruple, double, or remain the same?

Which of these characteristics best describes a basic solution? A:It tastes sour. B:It does not conduct electricity. C:It feels slippery. D:It turns litmus paper red.

Which causes the medium to vibrate in a direction parallel to

12) _Na + _H2O → ___ NaOH + __H2

Match the mineral categories to their best descriptions. a. sulfide mineralsminerals that have a sulfur atom surrounded by four oxygen atomsb. sulfate mineralstable salt is an example of this type of mineralc.

A covalent bond is best described as Question 1 options: the sharing of electrons between atoms. the transfer of electrons. a bond between a metal and a nonmetal. a bond between a metal and a polyatomic ion.

If you have 100 grams of H2, how many moles of H2 is that?

Consider four elements from Group 7A: fluorine in the second period, chlorine in the third period, bromine in the fourth period, and iodine in the fifth period. Which element has the largest first ionization energy?