Explain what happens to energy and matter during a chemical reaction.

How many naturally occurring elements are present on the product table?

The properties of elements can be predicted by which of the following? Where it is on the periodic table Where it was discovered Its color in its natural state Its name

What would be the danger of excessive inbreeding in animals such as dogs for example

Since the early 2000s, careers in the field of genetics have grown at a rapid pace. Which of these is a probable cause for this explosion of available and expanding jobs?

Why do water molecules and the materials dissolved in water move through the plasma membrane slowly?

State one qualitative and one quantitative statement of the following : water, sodium hydroxide, air, gold, mercury, carbon, iron and hydrogen gas

Why radiation is dangerous to people?

12. What volume of carbon dioxide contains the same number of molecules as 20.0 mL of oxygen at the same conditions?

The enthalpy of a system is the same as its: A. specific heat. B. heat of reaction. C. heat of combustion. D. heat content.

Carry out the following operations as if they were calculations of experimental results, and express each answer in the correct units with the correct number of significant figures: (a) 5.6792 m + 0.6 m + 4.33 m (b) 3.70 g - 2.9133 g (c) 4.51 cm x 3.