Which element is present in all organic

compounds?

(1) nitrogen

(2) oxygen

(3) carbon

(4) sulfur

A large crystal of potassium manganate is placed in the bottom of a beaker of cold water, and left for several hours. Describe what would be seen after 5 minutes

Use the information below, to write a word equation, then change it into a balanced symbol equation. 1) Magnesium reacts with Hydrochloric acid to make magnesium chloride and hydrogen gas

Which of the following is not a reason to use an alloy instead of a pure metal? Brass is more malleable that pure copper. Sterling silver is stronger than pure silver. Cast iron is more brittle than pure iron. Bronze is tougher than pure copper.

How do you identify a mineral there are six things

What happens when one freezes salt water? A - The solvent particles make it easier for the water molecules to form crystals. B - The solute particles make it harder for the water molecules to form crystals.

My dog made become frightened and cover when he hears loud thunder this is an example of a reaction to What kind of stimuli A. chemicals B. light C. touch D. sound

Some elements are solids at room temperature true or false

What is the most expensive element?

Constance is making a vegetable soup that contains carrots, beans, water, salt, pepper, bits of ham, and onions. the soup has to cook for 4 hours. while the soup is cooking, what will happen to some of the minerals that are in its ingredients?

Which of the following form solid solutions? Select all that apply. naturally occurring minerals gases present in air HCl and water sugar and water metal alloys