How does a balanced chemical equation illustrate that mass is never lost or gained in a chemical reaction?

Out of sodium, limestone, garnet, aggregrate which is not a common nonmetallic mineral?

Often atoms join so that each atom will have a. an even number of electrons. b. an outermost energy level that is full of electrons. c. an equal number of protons and neutrons d. more electrons than either protons or neutrons

Why do experiments need to be repeatable? A. Experimental results are not reliable if they are not repeatable. B. If something is seen only once, everyone will believe it. C. Scientist will not accept data they did not collect themselves. D.

Which of these is a covalent compound? 1. AICI3 2. CO 3. MgO 4. LiCI

A susbstance that is a strong electrolyte and tastes bitter is a: a. strong base b. weak base c. weak acid d. strong acid

How many grams of tin are found in 3.5 moles of tin

Determine whether each statement is a description of a physical property or a chemical property. Paper burns readily in air.

Cual es la función de los lípidos?

Butane - ethane - methane - propane: What do these hydrocarbons have in common? A) The same number of carbons present. B) They all have polar covalent bonds. C) They all have single covalent bonds. D) They have the same structural formulas.

Identify the form of energy that is converted into ther - mal energy by your body