Why does ice float?

a. of cohesion.

b. ice has a higher density than water.

c. water shrinks when it freezes.

d. water expands when it freezes.

What is the orientation of the two unhybridized p orbitals on Be with respect to the two Be-F bonds? a) Both p orbitals are parallel to the F-Be-F bond axes. b) Both p orbitals are perpendicular to the F-Be-F bond axes.

Which term is correctly paired with its role in the body? insulin - a sugar that regulates blood glycogen levels ADP - a molecule that releases energy when it forms ATP glycogen - a hormone found in blood that regulates blood glucose levels glucose

the volume of a gas is 550 ml at 960 mm hg and 200.0°C. What volume would the pressure of the gas be 830 mm Hg if the temperature is reduced to 150°C?

How can a solute be separated from a solvent?

What is your moms name?

Which cannot be separated into simpler substances? compound element solution mixture

What jobs involve chesmistry

Think about a neutral magnesium atom. Then think of a magnesium ion with a 2+charge. How are these two alike? How are they different? Be sure to use the terms proton, neutron, and electron in your answer.

What subatomic particle is specifically responsible for combining the atoms together to form a new substance?

A chemist reported that 100 gallons of a gas were available in a laboratory. Which property of the gas did the chemist report?