An element has atomic number 10 and an atomic mass of 20. How many neutrons are in the atom of this element?

A. 10

B. 20

C. 30

D. 0

E. 200

Which statement best describes a physical change? Changes can occur to certain chemical properties of the substance, but the overall shape of the substance will remain the same. A.

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What is a mechanical advantage?

How many neutron and protons are in lithium-7?

Write the balanced chemical equation for the reaction of HF with water.

A farmer is analyzing cross sections of his land to determine where to build a well.

A drag racing vehicle travels from 0 to 100 mph in 5 seconds north. what is the acceleration

When dissolving a solid, what happens to the rate of dissolution while stirring the solution

What is the percent composition of sulfur compound that contains 20.8 g carbon and 54.4 g sulfur?

Which of the following is an example of heat transfer by conduction? A. The upstairs of a house being warmer than the downstairs B. Burning your finger on a hot match C. The sun warming your skin D. Being warmed by a fire on a cold night