Which of the following elements has both metallic and nonmetallic properties?

A. Ar

B. Ge

C. Mg

D. S

Audrey pours hot chocolate into a cup. How is heat energy transferred? A) Heat from the hot chocolate moves to the cup. B) Cold from the cup moves to the hot chocolate. C) Heat energy does not move because the heat is in a liquid.

How many joules of heat energy are required to raise the temperature of 100 grams of water from 21°C to 23°C?

Succinic acid, a white solid that melts at 182°C, is heated gently, and a gas is given off. After the gas evolution stops, a white solid remains that melts at a temperature different from 182°C.

Why does lowered air pressure allow water to boil at room temperature? A. The kinetic energy of the liquid molecules increases, causing gas to form. B. The mass of the liquid is reduced, making it easier to form a gas. C.

Explain, in your own words, what makes something a science.

A liquid with a greater viscosity is always denser than a liquid with a lesser viscosity. True or False?

What are some example of nuclear acids

What is the mass of 4.6 moles of helium gas?

In the process of ionization, what is the relationship between the second ionization energy and the third ionization energy?

What are examples of convection?