SA Footy

magpie in the 80's wrote:1. What substance goes milky/cloudy when you bubble carbon dioxide into it? lime water
4. What element is graphite made up of? carbon
5. What is the correct name for the compound coomon salt, and what kind of compound is it? Sodium Chloride (NaCl)
7. What chemical is made during 'The Haber Process'? methane
9. How many Hydrogen atoms are present in a methane molecule? 4
10. What colour flame is produced when magnesium burns in air? Also what is the compound you are left with? white flame, Magnesium Oxide remains
12. The smallest particle of gold which still retains its characteristics is? atom
13. Alex and his sister are fighting over a piece of paper, It's torn. This is an example of?
A) Chemical Change B) Physical Change C) Combustion Process D) Nuclear Change
14. Sally washed her clothes on a warm summer day. When they were done she hung them on a line outside to dry. Which of the following processes is responsible for the clothes drying?
A) Condensation B) Melting C) Sublimation D) Evaporation
15. When a fuel is burned, it usually results in the production of? Carbon Dioxide
16. The change from the solid state to the gaseous state is called? sublimation
17. All the following tend to purify water EXCEPT?
A) Sunlight B) Oxidation C) Dead plant matter D) Sedimentation
18. Brass is? alloy of copper and zinc
19. If you want to make seawater pure enough to drink, that water must first be? stripped of salt (reverse osmosis)
20. An atom containing 19 protons, 20 neutrons, and 19 electrons has a mass number of? 39
21. What is the heaviest of the naturally occuring Noble gases? Radon
22. What is the lightest element of the ones below with an atomic symbol that is also a US state postal code?
A) Aluminum (AL) B) Scandium (SC) C) Argon (AR) D) Calcium (CA)
23. The heaviest element with a one letter atomic symbol is: Uranium
26. What was the first element to be produced artificially? Plutonium
27. One of two elements, by weight, that are most abundant in the Earth's crust. Iron
28. What element is the most electronegative and reactive of all elements? Fluorine
29. What element's three isotopes have different names? Hydrogen

Interceptor wrote:1. What substance goes milky/cloudy when you bubble carbon dioxide into it? lime water
4. What element is graphite made up of? carbon
5. What is the correct name for the compound coomon salt, and what kind of compound is it? Sodium Chloride (NaCl)
7. What chemical is made during 'The Haber Process'? methaneINCORRECT
9. How many Hydrogen atoms are present in a methane molecule? 4
10. What colour flame is produced when magnesium burns in air? Also what is the compound you are left with? white flame, Magnesium Oxide remains
12. The smallest particle of gold which still retains its characteristics is? atom
13. Alex and his sister are fighting over a piece of paper, It's torn. This is an example of?
A) Chemical Change B) Physical Change C) Combustion Process D) Nuclear Change
14. Sally washed her clothes on a warm summer day. When they were done she hung them on a line outside to dry. Which of the following processes is responsible for the clothes drying?
A) Condensation B) Melting C) Sublimation D) Evaporation
15. When a fuel is burned, it usually results in the production of? Carbon Dioxide INCORRECT
16. The change from the solid state to the gaseous state is called? sublimation
17. All the following tend to purify water EXCEPT?
A) Sunlight B) Oxidation C) Dead plant matter D) Sedimentation
18. Brass is? alloy of copper and zinc
19. If you want to make seawater pure enough to drink, that water must first be? stripped of salt (reverse osmosis) LOOKING FOR A PARTICULAR WOOD
20. An atom containing 19 protons, 20 neutrons, and 19 electrons has a mass number of? 39
21. What is the heaviest of the naturally occuring Noble gases? Radon
22. What is the lightest element of the ones below with an atomic symbol that is also a US state postal code?
A) Aluminum (AL) B) Scandium (SC) C) Argon (AR) D) Calcium (CA) INCORRECT
23. The heaviest element with a one letter atomic symbol is: Uranium
26. What was the first element to be produced artificially? Plutonium INCORRECT
27. One of two elements, by weight, that are most abundant in the Earth's crust. Iron INCORRECT
28. What element is the most electronegative and reactive of all elements? Fluorine
29. What element's three isotopes have different names? Hydrogen

brod wrote:2. Its flammable

Interceptor wrote:7. Ammonia

JAS wrote:Q3 Green
Q11 Don't know the right term...form, dimensions, takes up space ......CORRECT ON SPACE
Q15 Heat
Q19 Desalinated..CLOSE ENOUGH.........DISTILLED

Regards
JAS

magpie in the 80's wrote:ONLY 10 Q'S FOR THE CHEMIST GURU'S

magpie in the 80's wrote:1. What substance goes milky/cloudy when you bubble carbon dioxide into it?
LIME WATER
2. Why is Hydrogen (the lightest element in the Periodic Table) not used in most balloons/airships?
IT IS FLAMMABLE
3. What colour flame does Lithium have when it is lit?
CRIMSON
4. What element is graphite made up of?
CARBON
5. What is the correct name for the compound coomon salt, and what kind of compound is it?
SODIUM CHLORIDE AND AN IONIC COMPOUND
6. If iron and hydrochloric acid reacted, what would you get?
IRON CHLORIDE AND HYDOGEN
7. What chemical is made during 'The Haber Process'?
AMMONIA
8. When is an oxygen molecule formed?
WHEN 2 OXYGEN ATOMS BOND TOGETHER
9. How many Hydrogen atoms are present in a methane molecule?
FOUR
10. What colour flame is produced when magnesium burns in air? Also what is the compound you are left with?
A BRILLIANT WHITE FLAME AND MAGNESIUM XIDE
11. All matter has mass and?
OCCUPIES SPACE
12. The smallest particle of gold which still retains its characteristics is?
AN ATOM OF GOLD
13. Alex and his sister are fighting over a piece of paper, It's torn. This is an example of?
A) Chemical Change B) Physical Change C) Combustion Process D) Nuclear Change
B) PHYSICAL CHANGE
14. Sally washed her clothes on a warm summer day. When they were done she hung them on a line outside to dry. Which of the following processes is responsible for the clothes drying?
A) Condensation B) Melting C) Sublimation D) Evaporation
D) EVAPORATION
15. When a fuel is burned, it usually results in the production of?
WATER
16. The change from the solid state to the gaseous state is called?
SUBLIMATION
17. All the following tend to purify water EXCEPT?
A) Sunlight B) Oxidation C) Dead plant matter D) Sedimentation
DEAD PLANT MATTER
18. Brass is?
AN ALLOY
19. If you want to make seawater pure enough to drink, that water must first be?
DISTILLED
20. An atom containing 19 protons, 20 neutrons, and 19 electrons has a mass number of?
39
21. What is the heaviest of the naturally occuring Noble gases?
RADON
22. What is the lightest element of the ones below with an atomic symbol that is also a US state postal code?
A) Aluminum (AL) B) Scandium (SC) C) Argon (AR) D) Calcium (CA)
A) ALUMINIUM (AL)
23. The heaviest element with a one letter atomic symbol is:
URANIUM
24. There are currently how many periods on the periodic table?
SEVEN
25. What is the lightest element with an atomic symbol not related to its English name?
SODIUM (NA)
26. What was the first element to be produced artificially?
TECHNETIUM
27. One of two elements, by weight, that are most abundant in the Earth's crust.
SILICON AND OXYGEN
28. What element is the most electronegative and reactive of all elements?
FLUROINE
29. What element's three isotopes have different names?
HYDROGEN
30. What element is name after Copenhagen, Denmark?
HAFNIUM