Is mixing food coloring with water a chemical or physical change?

List the two types of friction and give an example for each

How are linear, trigonal planar, and bent molecular shapes similar? How are they different?

The molecular weight of NaCl is 58.44 grams/moles. How many grams of NaCl are found in a beaket with 100 ml of a 0.0050 M solution

For a solar eclipse to occur, a. the sun must be directly between earth and the moon. b. the moon must be directly between earth and the sun. c. the moon must be directly behind earth. d. earth must be directly between the sun and the moon.

Which phenomena support only the wave theory of light? reflection refraction diffraction interference photoelectric effect

Consider n2 (g) + 3h2 (g) →→ 2nh3 (g). what is the mass of nitrogen gas required to react with 0.129 g h2?

Write a sentence that uses the words "mass extinction" correctly

Which description is not a property of an acid? A turns litmus paper red B bitter taste C corrosive D dissolve metals

Concerning the 10.0 mL of 0.50 M NaCl diluted to 100 mL of solution: When a solution is diluted, does the dilution change the number of grams dissolved? yes no

What causes element name to change