An atom has 25 protons, 30 neutrons and 25 electrons. what is the charge of the atom's nucleus?

What useful products do anabolic reaction form?

What type of composition does an igneous rock have that contains mostly plagioclase feldspar and about 30 percent dark silicate minerals? A. basaltic B. granitic C. andesitic D. ultramafic

The chart seen here shows the decay of a sample of carbon-14 over a period of 33,000 years. What is the approximate half-life of carbon 14?

Which of the following situations indicates an alpha emission? The atomic number increases by one, but the mass number does not change. The atomic number decreases by one, and the mass number decreases by one.

Which of the followings represents a negatively charged ion

List results of Chemical Reactions.

When you measure something in meters cubed, you are measuring

Low density: low pressure: high density Is which. evaporation? water vapor? condensation / liquid water

Which structures are found on sponges? pores medusae polyps stinging cells

Coefficients in a chemical equation are used to: balance the number of atoms on both sides of the equation ensure that all subscripts on both sides of the equation are the same indicate energy changes that occur during the reaction indicate the type