Give an example of a physical change and a chemical change for iron

You move a book 100 centimeters with a force of 15 newtons. How much work did you perform?

What can happen when tectonic plates move a few centimeters?

Use a Punnett square to predict the cross of a homozygous tall parent with a homozygous short parent, if tall is dominant over short. What will be the phenotype of the offspring described in this example. Select one: a. some tall some short b.

Name three populations found in a prairie ecosystem

K occupies a volume of 5.0 liters. The gas sample is completely transferred to a 10.0-liter sealed, rigid container. What is the new pressure of the gas sample when the temperature returns to 273 K? (1) 1.0 atm (3) 3.0 atm (2) 2.0 atm (4) 4.0 atm

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?

Is the water density higher than the aluminum density