A match burns because of what type (s) of properties?

A. Physical only

B. Chemical only

C. Physical and Chemical

What process occurs as pieces of dry ice get smaller

What is the electron configuration of the neutral lithium atom?

Waves transfer A density B energy C heat D matter

in the combustion of hydrogen gas, hydrogen reacts with oxygen from the air to form water vapor. if you brun 31.0 g of hydrogen and produce 277 g of water, how much oxygen reacted?

You are building a shelf at home. As you sand the wood dust floats into the air. The air and dust from sanding create which of the following. a. a solution b. a pure substance c. a colloid d. a suspension

How are protons, electrons, and neutrons correctly compared

You compare two layers to a because the crust and upper mantle are solid

A substance that speeds up the rate of a chemical reaction is called a. a catalyst. b. a lipid. c. a molecule. d. an element.

How many moles of Mgs203 are in 245g of the compound

A student was trying to obtain lithium by electrolysis of aqueous lithium chloride. Was he successful?