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ชื่อ……………………………………………………………………………………………… สกุล................................................................ชั้นม.1/.......เลขที่.........
เรื่องความร้อนและปริมาณความร้อน
1.ความร้อนแฝงจำเพาะ (Latent heat: L)
ความร้อนแฝงจำเพาะแบ่งออกเป็น 2 ประเภทคือ 1.ความร้อนแฝงจำเพาะของการ ...................................................................
คือ..................................................................................................................................................................................................
ซึ่งมีค่าเท่ากับ ...............................................2.ความร้อนแฝงจำเพาะของการ ............................................................................
คือ ……………………………………………………………………………………….....................ซึ่งมีค่าเท่ากับ ...................................................
ความจุความร้อนจำเพาะ (Specific heat: c) *โดยมากแล้วโจทย์จะกำหนดมาให้ หากไม่ได้กำหนดมาจะแบ่งเป็น 1. น้ำ มีค่า
ความจุความร้อนจำเพาะ = ………………………………… 2.ไอน้ำหรือน้ำแข็งมีค่าความจุความร้อนจำเพาะ=………………………………
โดยสูตรการหาปริมาณความร้อนแบ่งออกเป็น 2 กรณีคือ
2.ถ้านักเรียนต้องการทำให้น้ำแข็งมวล 2 กิโลกรัมกรัม เกิดการหลอมเหลวกลายเป็นของเหลวได้หมดพอดี จะต้องใช้ปริมาณ
ความร้อนเท่าใด
.......................................................................................................................................................................................................
.......................................................................................................................................................................................................
.......................................................................................................................................................................................................
.......................................................................................................................................................................................................
3. ถ้านักเรียนต้องการทำให้น้ำมวล 20 กรัม เกิดการระเหยกลายเป็นไอได้หมดพอดี จะต้องใช้ปริมาณความร้อนเท่าใด
.......................................................................................................................................................................................................
.......................................................................................................................................................................................................
.......................................................................................................................................................................................................
.......................................................................................................................................................................................................
ชื่อ……………………………………………………………………………………………… สกุล................................................................ชั้นม.1/.......เลขที่.........
4. น้ำแข็งมวล 5 กรัมที่อุณหภูมิ 0 องศาเซลเซียส ถูกหลอมเหลวให้กลายเป็นน้ำที่อุณหภูมิ 0 องศาเซลเซียสจนหมด อยาก
ทราบว่าจะต้องใช้ปริมาณความร้อนเท่าใด
.......................................................................................................................................................................................................
.......................................................................................................................................................................................................
.......................................................................................................................................................................................................
.......................................................................................................................................................................................................
.......................................................................................................................................................................................................
6.หากต้องการให้น้ำมวล 10 กรัมมีมีอุณหภูมิสูงขึ้น 50 องศาเซลเซียสต้องใช้ปริมาณความร้อนเท่าใด
.......................................................................................................................................................................................................
.......................................................................................................................................................................................................
.......................................................................................................................................................................................................
.......................................................................................................................................................................................................
.......................................................................................................................................................................................................
.......................................................................................................................................................................................................
7.จงหาพลังงานความร้อนที่ทำให้เหล็กทอง 0.1 กรัม ที่อุณหภูมิ 50 องศาเซลเซียส มีอุณหภูมิสูงขึ้นเป็น 70
องศาเซลเซียส กำหนด (กำหนดความร้อนจำเพาะของเหล็กเท่ากับ 0.3 แคลอรี/กรัม. เซลเซียส)
.......................................................................................................................................................................................................
.......................................................................................................................................................................................................
.......................................................................................................................................................................................................
.......................................................................................................................................................................................................
.......................................................................................................................................................................................................
การถ่ายโอนความร้อนแบ่งออกเป็น …………………………………………………………………………………………………………………………………………………………………
1.การถ่ายโอนความร้อนที่ไม่จำเป็นต้องอาศัยตัวกลาง..................................................................................................................
2.ทองแดง เงิน อะลูมิเนียม ขัดเป็น.....................................................................................ที่ดี
3.การถ่ายโอนความร้อนแบบใดตัวกลางมีการเคลื่อนที่ร่วมไปกับความร้อน.................................................................................
4.ในการต้มมาม่าทานนั้นมีการนำความรู้เรื่องการถ่ายโอนความร้อนมาใช้อย่างไรบ้าง
.......................................................................................................................................................................................................
.......................................................................................................................................................................................................

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ความร้อนวันเสาร์1.1

  • 1. ชื่อ……………………………………………………………………………………………… สกุล................................................................ชั้นม.1/.......เลขที่......... เรื่องความร้อนและปริมาณความร้อน 1.ความร้อนแฝงจำเพาะ (Latent heat: L) ความร้อนแฝงจำเพาะแบ่งออกเป็น 2 ประเภทคือ 1.ความร้อนแฝงจำเพาะของการ ................................................................... คือ.................................................................................................................................................................................................. ซึ่งมีค่าเท่ากับ ...............................................2.ความร้อนแฝงจำเพาะของการ ............................................................................ คือ ……………………………………………………………………………………….....................ซึ่งมีค่าเท่ากับ ................................................... ความจุความร้อนจำเพาะ (Specific heat: c) *โดยมากแล้วโจทย์จะกำหนดมาให้ หากไม่ได้กำหนดมาจะแบ่งเป็น 1. น้ำ มีค่า ความจุความร้อนจำเพาะ = ………………………………… 2.ไอน้ำหรือน้ำแข็งมีค่าความจุความร้อนจำเพาะ=……………………………… โดยสูตรการหาปริมาณความร้อนแบ่งออกเป็น 2 กรณีคือ 2.ถ้านักเรียนต้องการทำให้น้ำแข็งมวล 2 กิโลกรัมกรัม เกิดการหลอมเหลวกลายเป็นของเหลวได้หมดพอดี จะต้องใช้ปริมาณ ความร้อนเท่าใด ....................................................................................................................................................................................................... ....................................................................................................................................................................................................... ....................................................................................................................................................................................................... ....................................................................................................................................................................................................... 3. ถ้านักเรียนต้องการทำให้น้ำมวล 20 กรัม เกิดการระเหยกลายเป็นไอได้หมดพอดี จะต้องใช้ปริมาณความร้อนเท่าใด ....................................................................................................................................................................................................... ....................................................................................................................................................................................................... ....................................................................................................................................................................................................... .......................................................................................................................................................................................................
  • 2. ชื่อ……………………………………………………………………………………………… สกุล................................................................ชั้นม.1/.......เลขที่......... 4. น้ำแข็งมวล 5 กรัมที่อุณหภูมิ 0 องศาเซลเซียส ถูกหลอมเหลวให้กลายเป็นน้ำที่อุณหภูมิ 0 องศาเซลเซียสจนหมด อยาก ทราบว่าจะต้องใช้ปริมาณความร้อนเท่าใด ....................................................................................................................................................................................................... ....................................................................................................................................................................................................... ....................................................................................................................................................................................................... ....................................................................................................................................................................................................... ....................................................................................................................................................................................................... 6.หากต้องการให้น้ำมวล 10 กรัมมีมีอุณหภูมิสูงขึ้น 50 องศาเซลเซียสต้องใช้ปริมาณความร้อนเท่าใด ....................................................................................................................................................................................................... ....................................................................................................................................................................................................... ....................................................................................................................................................................................................... ....................................................................................................................................................................................................... ....................................................................................................................................................................................................... ....................................................................................................................................................................................................... 7.จงหาพลังงานความร้อนที่ทำให้เหล็กทอง 0.1 กรัม ที่อุณหภูมิ 50 องศาเซลเซียส มีอุณหภูมิสูงขึ้นเป็น 70 องศาเซลเซียส กำหนด (กำหนดความร้อนจำเพาะของเหล็กเท่ากับ 0.3 แคลอรี/กรัม. เซลเซียส) ....................................................................................................................................................................................................... ....................................................................................................................................................................................................... ....................................................................................................................................................................................................... ....................................................................................................................................................................................................... ....................................................................................................................................................................................................... การถ่ายโอนความร้อนแบ่งออกเป็น ………………………………………………………………………………………………………………………………………………………………… 1.การถ่ายโอนความร้อนที่ไม่จำเป็นต้องอาศัยตัวกลาง.................................................................................................................. 2.ทองแดง เงิน อะลูมิเนียม ขัดเป็น.....................................................................................ที่ดี 3.การถ่ายโอนความร้อนแบบใดตัวกลางมีการเคลื่อนที่ร่วมไปกับความร้อน................................................................................. 4.ในการต้มมาม่าทานนั้นมีการนำความรู้เรื่องการถ่ายโอนความร้อนมาใช้อย่างไรบ้าง ....................................................................................................................................................................................................... .......................................................................................................................................................................................................