In the chemical reaction shown below, which element was oxidized? 4Fe + 3O2 yields 2Fe2O3

What is the main difference between physical properties and chemical properties

Name three natural chemicals and three artificial chemicals that are part of your daily life

temperature is a measure of particles kinetic energy explain using words what happens to the kinetic energy as the temperature increases and how the motion of particles changes as a result

Which of the following substances does carbon change into in plants during photosynthesis? A. Chlorophyll B. Sugar C. Sunlight D. Water

Hexane combusts in the presence of oxygen to produce carbon dioxide and water. 2C6H14 + 19O2 → 12CO2 + 14H2O How many atoms, total, are reacting in this equation?

One molecule of caffeine contains 8 atoms of carbon, 10 atoms of hydrogen, 2 atoms of oxygen, 4 atoms of nitrogen. write the formula for caffeine with the elements in the order they are given.

A piece of magnesium metal is heated in the presence of chlorine gas, and a reaction takes place. What compound will most likely be produced? A. Mg2C1 B. MgCl3 C. MgCl2 D. MgCI

What is the pressure of the gas in this mercury manometer if h = 81 mm and atmospheric pressure is 749 mmHg

A microscope containing two or more lenses is an

What word means the remains or imprint of once living organisms found in layer of rock