On the periodic table, which group contains the noble gases? the last group A. the second group B. the fourth group C. the first group D.

same number of protons

Your computer is an example of which type of energy? Question options: Nuclear Kinetic Light All of the above

What is the electrolysis of calcium hydroxide

One atom of iron contains 26 protons, 30 neutrons, and 26 electrons. Which of the following would be possible for another atom of iron?

There is enough DNA in the average person's body to stretch from the sun to Pluto and back - 17 times? T or F

The variable in an expierment that is being observed and changes in response to an independent variable

Read the list of elements given below. He, Ne, Ar, Kr Which of the following about the elements is true? All of them are unreactive gases. All of them are reactive metalloids. He and Ne are unreactive gases and Ar and Kr reactive metalloids.

Blank is the energy required for a chemical reaction to take place, and blank is the energy associated with every substance.

When a group 7 element reacts with a group 1 element, what is the effect on the group 1 atom

Which term best indicates the average mass of an atom of an element? atomic number mass number group number atomic mass

How many protons and electrons in Arsenic ion