1: Which substance is readily converted from a liquid to a solid by chemical reaction with hydrogen?
cotton-seed oil
glycerin
kerosene
mercury
2: The ability of a substance to remove oxygen from a compound is called
oxidation
hydrogenation
electrolysis
reduction
3: When passed over hot copper oxide, hydrogen acts as
a catalyst
an oxidizing agent
a reducing agent
a solute
4: Hydrogen can be prepared by reacting cold water with
aluminum
iron
platinum
sodium
5: The safest way to make hydrogen in the laboratory is to add hydrochloric acid to
calcium
iron
potassium
sodium
6: Hydrogen may be formed when steam reacts with hot
copper
iron
mercury
silver
7: The lightest element known is
boron
helium
hydrogen
lithium
8: Hydrogen is
less dense than air and inert
very soluble in water and combustible
odorless and a reducing agent
denser than air and tasteless
9: Hydrogen may be obtained
2007-09-27 06:45:45 · 4 answers · asked by kimberly 1 in Science & Mathematics ➔ Chemistry
Sorry kid, but do your own homework
2007-09-27 06:48:09 · answer #1 · answered by Anonymous · 1⤊ 2⤋
1. Cotton seed oil
2. Reduction
3. Reducing agent
4. Sodium (others need hot water or steam)
5. Iron
6. Iron
7. Hydrogen
8. Odorless reducing agent
9. By reaction of zinc with hydrochloric acid
2007-09-27 06:52:51 · answer #2 · answered by steve_geo1 7 · 1⤊ 1⤋
How are you going to pass a test and get good grades if you want people to do your homework for you? I suggest you study and learn to find answers yourself. It will help you in the long run.
2007-09-27 06:50:45 · answer #3 · answered by WilmaF 5 · 0⤊ 2⤋
How about you actually read your Chemistry book, it is NOT that hard.
2007-09-27 06:48:17 · answer #4 · answered by Soda 4 · 1⤊ 2⤋