How does the number of valence electrons in an atom relate to the elements placement on the periodic table?

Sodium phosphate + calcium chloride yield calcium phosphate + sodium chloride answer

Light waves come in different wavelengths and frequencies. The color of the light we see is dependent on wavelength. When we see a rainbow, we are actually seeing

What kind of energy transformation occurs in a gasoline-powered car? A. Chemical energy is converted into mechanical energy. B. Mechanical energy is converted into light energy. C. Light energy is converted into sound energy. D.

State the relationship between solubility and density.

3) Which statement describes a mixture of sand and water at room temperature? (1) It is heterogeneous, and its components are in the same phase. (2) It is heterogeneous, and its components are in different phases.

Which of these describes chemical reaction The color of he substance

Use the information in the table below to answer the following question: Lake Volume Buffer (CaCO3) Concentration Squirrel Lake, 80,000 Liters, 2 mg/L Moose Lake, 100,000 Liters, 1.

Which of the following is a part of a land based carbon cycle? coral reefs Crab shells Trees Whales

What is common of volcanoes that have the most violent eruptions? A. They feature magma with very high silica content. B. They are shield volcanoes. C. They feature magma with low viscosity. D. They have no magma, but have much lava.

Why is nitrogen fixation such an important step in the nitrogen cycle? Question 7 options: Bacteria convert the fixed nitrogen back into N2. Soil nitrogen is different. Decomposers need to use NH4+. Plants can't use nitrogen in the form of N2.