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15
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Is burning paper a reversible or irreversible change? Why? (็ง็บธๆฏๅฏ้ๅๅ่ฟๆฏไธๅฏ้ๅๅ๏ผไธบไปไน๏ผ)
Irreversible. It cannot be turned back into paper. ไธๅฏ้ใๅฎไธ่ฝๅๅ็บธๅผ ใ
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15
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What is the difference between a solute and a solvent? (ๆบถ่ดจๅๆบถๅไน้ดๆไปไนๅบๅซ๏ผ)
Solute: The solid that dissolves. Solvent: The liquid (like water). ๆบถ่ดจ๏ผๆบถ่งฃ็ๅบไฝใๆบถๅ๏ผๆบถ่งฃๅบไฝ็ๆถฒไฝ๏ผๅฆๆฐด๏ผใ
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thief
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25
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magnet
Take 15 points!
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fairy
Take points!
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baam
Lose 20 points!
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15
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How is an intrusive igneous rock different from an extrusive igneous rock? (ไพตๅ ฅๅฒฉๅๅทๅบๅฒฉๆไปไนไธๅ๏ผ)
Intrusive: Cooled slowly underground. Extrusive: Cooled quickly on the surface. ไพตๅ ฅๅฒฉ๏ผๅจๅฐไธ็ผๆ ขๅทๅดใๅทๅบๅฒฉ๏ผๅจๅฐ่กจๅฟซ้ๅทๅดใ
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lifesaver
Give 5 points!
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fairy
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25
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shark
Other team loses 20 points!
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banana
Go to last place!
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15
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What is a thermal conductor? Give an example. (ไปไนๆฏๅฏผ็ญไฝ๏ผ่ฏทไธพไธไธชไพๅญใ)
A material that lets heat pass through easily, like metal. ไธ็ง่ฝ่ฎฉ็ญ้่ฝปๆพ้่ฟ็ๆๆ๏ผๅฆ้ๅฑใ
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heart
Other team wins 25 points!
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gift
Win 5 points!
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rocket
Go to first place!
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lifesaver
Give 20 points!
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15
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What is the boiling point and melting point of water?
Boiling: 100ยฐC / Melting: 0ยฐC.
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15
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Is glass a good electrical conductor? (็ป็ๆฏ่ฏๅฅฝ็ๅฏผ็ตไฝๅ๏ผ)
No, glass is an insulator. ไธ๏ผ็ป็ๆฏ็ป็ผไฝ๏ผไธๅฏผ็ต๏ผใ
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15
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What is a pesticide? (ไปไนๆฏๆ่ซๅ๏ผ)
A chemical used to kill pests like insects or weeds. ไธ็ง็จไบๆๆญปๅฎณ่ซ๏ผๅฆๆ่ซๆๆ่๏ผ็ๅๅญฆ็ฉ่ดจใ
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15
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What is a "property"?
A characteristic (็นๅพ). Examples: Color, size, shape (้ข่ฒใๅคงๅฐใๅฝข็ถ).
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15
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What is the difference between a physical change and a chemical reaction? (็ฉ็ๅๅๅๅๅญฆๅๅบไน้ดๆไปไนๅบๅซ๏ผ)
Physical: Only the appearance changes. Chemical: A new substance is made. ็ฉ็ๅๅ๏ผไป ๅค่งๆนๅใๅๅญฆๅๅบ๏ผไบง็ไบๆฐ็ฉ่ดจใ
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15
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What are three signs (evidence) that a chemical reaction is happening? (ๅๅญฆๅๅบๅ็็ไธไธช่ฟน่ฑก๏ผ่ฏๆฎ๏ผๆฏไปไน๏ผ)
Color change, new smell, or production of gas (bubbles). ้ข่ฒๅๅใไบง็ๆฐๆฐๅณๆไบง็ๆฐไฝ๏ผๆฐๆณก๏ผใ
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What are crystals? (ไปไนๆฏๆถไฝ๏ผ)
Solid materials where particles are in a regular, repeating pattern. ็ฒๅญๆๅๆ่งๅ้ๅคๆจกๅผ็ๅบไฝๆๆใ
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15
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What two properties does all matter have? (ๆๆ็ฉ่ดจ้ฝๅ ทๆๅชไธคไธช็นๆง๏ผ)
Mass and Volume (่ดจ้ไธไฝ็งฏ).
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15
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In which type of rock are almost all fossils found? (ๅ ไนๆๆ็ๅ็ณ้ฝๆฏๅจๅช็งๅฒฉ็ณไธญๅ็ฐ็๏ผ)
Sedimentary rock. ๆฒ็งฏๅฒฉ๏ผๅ ไนๆๆๅ็ณ้ฝๅจ่ฟ้ๅ็ฐ๏ผใ
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