When barium hydroxide and ammonium chloride react, the temperature of the mixture decreases. What kind of reaction is this?

Malia was able to make a paper lip float on the surface of water. What will most likely happen to the paperclip if a drop of dishwashing detergent is added near it?

How does chemical change affect the composition of matter

If the ka of a monoprotic weak acid is 1.0 * 10-6, what is the ph of a 0.50 m solution of this acid?

Which process can you blame if you burn your finger on a metal utensil sitting in a pot of extremely hot water

A drop of liquid tends to have a spherical shape due to the property of 1. viscosity. 2. capillary action. 3. surface tension. 4. vapor pressure. 5. close packing.

How many particles are in 1 mole of a substance?

Initially you dissolved all, or most, of the p-aminobenzoic acid in ethanol. then you slowly added sulfuric acid. as you did this, a large amount of white solid formed. during the course of the reaction, that white solid dissolved.

How do you know if a chemical reaction has occurred?

Why must a container or system be closed for equilibrium to be established?

What is the bond angle between the hydrogen atoms in an ammonia (NH₃) molecule?