What do scientists use to determine the layering of the interior of the Earth?

How many physical layers does the Earth have?

How many atmospheric layers does the Earth have?

How did distance from the sun affect the size and composition of the planets?

Name and describe the physical and compositional layers into which scientists divide the Earth.

How is the theory of plate tectonics related to the radioactive decay of elements within Earth's interior?

How is biological evolution defined?

A vesicular igneous texture indicates that __________.

a. there was a lot of gas in the magma

b. the rock cooled

c. the rock broke apart as it flowed

d. the rock cooled slowly

e. the ash and pumice were hot and became compacted

When water freezes, it expands. Use this statement and your knowledge of density to explain why ice cubes float in water.

How do you determine if a molecule is polar?

Predict the molecular structure and the bond angles for each of the following. $\mathrm { PCl } _ { 3 }$

How do you find number of valence electrons in a Lewis structure?

How many bonding electrons are in the Lewis structure of carbon monoxide, CO ?

Describe the interactions that occur between individual chlorine atoms as they approach each other and form Cl2. What combination of forces gives rise to the energy holding the atoms together and to the final internuclear distance?