A substance that undergoes a change in a chemical reaction is

a. a product.

c. a reactant.

b. a chemical.

d. an enzyme.

What is common to all of the oxidation reactions in the krebs cycle?

Which of the following is an example of a force? Question 8 options: a) push b) pull c) inertia d) both A and B e) all of the above

Which one of the following statements is correct. a. an electron has a neutral electrical change, b. An electron has a negative electrical change. c. An electron is located inside the nucleus of an atom. d. An electron is much larger than an atom.

Which of the following atoms is most able to attract electrons? Group of answer choices Co F H S

Consider the balanced equation below. 4NH3 + 3O2 - > 2N2 + 6H2O What is the mole ratio of NH3 to N2? 2:4 4:2 4:4 7:2

What happens when the threat of exposure to dirty air is reduced in a community? There is enough oxygen available for people's lungs to function normally The amount of indoor air pollutants released during a fossil fuel burn decreases There is a

Is chicken noodle soup an element, a compound, a homogeneous mixture, or a heterogeneous mixture?

How is the amount of sunlight affect the makeup of an ecosystem

How many moles are in 65 g of carbon dioxide (CO2) ?

kilograms represented by the mass defect for thorium - 234=3.09x 10-27 kg what is the nuclear binding energy for thorium - 234