Two atoms that are isotopes of one another must have a different number of what?

a. neutrons

b. all particles

c. protons

d. electrons

When a steadily flowing gas flows from a larger-diameter pipe to a smaller-diameter pipe, what happens to (a) its speed, (b) its pressure, and (c) the spacing between its streamlines?

Can this balance be read to the nearest milligram? yes no

What is the electron configuration for the noble gases other than helium?

An atom has 20 protons, 26 neutrons, and 20 electrons. what could be the atomic mass of this atom?

Which of these pairs of elements will not form an ionic compound together

What element is likely to form an ionic compound with chlorine?

Will a parachute slow a skydiver more at a very high altitude or a lower altitude?

Carbon monoxide is: Only found in large cities An odorless, colorless, toxic gas Healthy to breath in A danger when driving on the open highway

What is a potential benefit of fuel cell cars? increased efficiency converting gasoline to energy no recharging necessary decreased automobile cost larger engines

Water is a great solvent. For example, it causes ionic compounds like sodium chloride (table salt) to dissociate. One of these reasons that water does is because it is polar molecule.