Why can't elements be broken into simpler substances?

Suppose you fill a grass with ice cubes. When the ice cubes melt, is the glass still full?

All atoms are neutral. explain the basis of this fact

How many grams of CO2 are in 2.1 mol of the compound?

Nuclear medicine injects radioisotopes into the body to diagnose organ function. Radioisotopes with short half lives are used so they completely degrade quickly leaving harmless chemicals behind in the body.

Which of the following steps in making a cup of coffee involves a chemical change in matter?

Which best describes the two ways that energy is measured A. In convection and in temperature B. In temperature and in radiation C. In radiation and in convection D. In wavelength and in temperature

What usually happens to the outer electrons of metallic atoms when they combine chemically with nonmetallic atoms?

How many moles of ca atoms are in 534.0 g ca?

Select all that apply. reactions between atoms occur when: an atom seeks to fill its outer shell of electrons an atom seeks to balance its positive and negative charges the reaction will result in paired electrons

Have scientists found any reliable predictors for earthquakes, like radon gas release or weird animal behavior?