Is sodium hydroxide dissolving in water a physical change?

Which pair of molecules is not a polar bond? A) N-O B) C-O C) O-H D) O-o

5 The element sulfur is classified as a (1) metal (3) nonmetal (2) metalloid (4) noble gas

Most gases become more soluble in liquid as the temperature what?

A cr3 + (aq) solution is electrolyzed using a current of 7.40 a. what mass of cr (s) is plated out after 1.85 days?

Which groups on the periodic table contains magnesium (Mg) ?

Which civilization formed a confederation thay may have impacted the us government A. Powhatan B. Algonquian C. Iroquois D. Anasazi

Jasmine breathed against the window pane and noticed that her breath made a spot on it from the water vapor in her breath. Which stage of the water cycle does this show? A. precipitation B. evaporation C. condensation D. transpiration

Amber has developed a line of organic lotions and handmade soaps with unique, herb-based scents and a touch of bee balm. She plans to sell these products to the wealthy residents of a nearby resort town.

Two pure elements react to form a compound. One element is an alkali metal, X, and the other element is a halogen, Z. Which of the following is the most valid scientific claim that can be made about the compound? a. It has the formula XZ2 b.

Are protons positive and neutrons neutral