A positive ion has more

A. protons than electrons

B. electrons than protons

C. neutrons than protons

What is the relative charge carried by an electron

How does the surface metabolism model of chemical evolution differ from the prebiotic soup model? see section 2.4 (page 70) ?

List two solutions you can drink

N order to observe a property of a substance, the substance must interact with another substance, such as when gasoline burns or when sodium metal reacts with water.

How would you separate a mixture of water, sand, salt and iron filings into its four component parts

Which of the following is NOT a chemical reaction? a. ice melts from water b. ammonia breaks up into nitrogen and hydrogen c. hydrogen and oxygen combine to make water

Which type of atom is expected in the products of this chemical reaction? C6H12O6 + 6O2? A. boron (B) B. lithium (Li) C. oxygen (O) D. helium (He)

How many moles of caco3 are there in an antacid tablet containing 0.515 g caco3?

Consider a sample of helium and a sample of neon, both at 30.0°C and 1.5 atm. Both samples have a volume of 5.0 liters. Which statement concerning these samples is not true? Consider a sample of helium and a sample of neon, both at 30.0°C and 1.

Select all the statements that are true about electron configurations: A) The electron configuration of an atom describes the energy of electrons in the atom.