Which of the following statements is true? a. molecules that compose matter are in constant motion. b. molecules that compose matter only move when heat is added. c. gas and liquid particles are always moving, but solid particles do not move. d. solid particles can vibrate, but gas and liquid particles cannot vibrate.

Margaret wants to make an orange flavored drink by stirring powdered drink mix into a glass of water. she doesn't like drinks that have small clumps of powdered solid in them, so she wants the drink to be a perfect solution. what factors should margaret not consider when deciding how much powder to add to her glass of water?

Identify arrows pointing to bonding electrons. done h-0-0-h ) intro

Calculate the estimated density of each ball. use the formula d = m/v where d is the density, m is the mass, and v is the volume. record your calculations in table a of your student guide. given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. record your prediction in table a. what is the estimated density of the table tennis ball? record your answer to the nearest hundredth