Which element has the greatest density at STP?

(1) magnesium (3) barium

(2) beryllium (4) radium

The taste known as sour is caused by: A. the presence of hydrogen ions. B. hot materials. C. sugars. D. any kind of ions.

Light elements with an atomic number less than 20 generally have a neutron to proton ratio equal to a. 1:1 b. 1.3:1 c. 1.5:1 d. 2:1

Mass is constant regardless of an object's location, but the weight of the object depends upon

What powers explosions and fire

How much heat is required to raise the temperature of 835g of water from 35.0°C to 65.0°C?

Describe What kind of ions do metals form? What kind of ions do nonmetals form?

A car is driven through streets treated with salt and then parked in a warm garage. a) How will the rate of rusting compare with a car that has not been driven in the streets treated with salt but left parked outside?

Amalgam is an alloy that contains mercury and other metals. Which of these atoms would most likely form metallic bonds with mercury? Check all that apply. bromine copper hydrogen iodine silver tin

Which fossil fuel is the most widely consumed in the United States? A. petroleum B. natural gas C. peat D. coal

Why is the use of natural gas as a full becoming more common