If you wanted a three-dimensional sense of the shape of a molecule and you were not interested in the internal bonds, which model would you use?

structural formula

skeletal formula

space-filling model

ball-and-stick model

Extend your thinking: Why do you think the temperature does not change much during a phase change? If possible, discuss your answer with your classmates and teacher.

There is mercury inside a thermometer, wouldn't it kill a person if it popped open?

Jin listed some common thermal insulators and conductors in a chart. Insulators rubber Conductors copper х air Which belongs in the area marked with an X? iron foam wood glass

What are the four functions of the endocrine system?

How many molecules are in 4.00 x 10^-23 moles of N2O5?

A 5.91 g unknown sample analyzed by elemental analysis revealed a composition of 37.51 % C. In addition, it was determined that the sample contains 1.4830 * 1023 hydrogen atoms and 1.2966 * 1023 oxygen atoms. What is the empirical formula?

How can we use the mole to convert between the mass and the volume of a substance?

What is the definition of convection a. the process in which energy is released by molecules breaking apart b. the process in which energy is released by molecules breaking apart c. transfer of heat between two objects that are touching d.

Describe how space exploration has changed the economy and culture, and include one specific example.

If a sample containing 2.50 ml of nitroglycerin (density=1.592g/ml) is detonated, how many total moles of gas are produced?