Why did the vinegar erupt when I put the baking soda?

An instrument that allows you to look closely at objects that are invisible to the human eye, including cells

Which of these are examples of chemical changes? Check all that apply. burning a candle boiling alcohol frying an egg melting an ice cube making coffee

An effective collision between reactant particles requires the particles to have the proper what?

The particles in both gases and liquids select one: a. consist only of atoms. b. can change positions with other particles. c. vibrate in fixed positions. d. are packed closely together.

When compared with the energy of an electron in the first shell of a carbon atom, the energy of an electron in the second shell of a carbon atom is (1) less (2) greater (3) the same

A sample of helium, at 20 °c, occupies a volume of 3.17 l at a pressure of 6.21 atm. what volume does this helium sample occupy if the pressure is reduced to 5.57 atm while maintaining the temperature at 20 °c?

List the different kinds of nitrogen bases

What is the purpose of the scientific method? A. To make a guess in order to prove a hypothesis B. To provide a reliable answer to a specific question C. To remove any source of bias in an experiment D.

Given the balanced equation: C₃H₈ + 5O₂ → 3CO₂ + 4H₂O, what is the total number of moles of O₂ required for the complete combustion of 1.5 moles of C₃H₈?

What are substances called whose solutions conduct electricity?