Junior ScienceB.H. Sanborn, 1921 - 533 σελίδες |
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Σελίδα viii
... Oxygen , the Fire Gas How can we prepare oxygen ? - What is oxygen like ? What is oxidation ? Why does paint harden ? What are rusting and decay ? - Exercises . CHAPTER VI PAGE 36 Carbon and Carbon Dioxide Why do some substances char ...
... Oxygen , the Fire Gas How can we prepare oxygen ? - What is oxygen like ? What is oxidation ? Why does paint harden ? What are rusting and decay ? - Exercises . CHAPTER VI PAGE 36 Carbon and Carbon Dioxide Why do some substances char ...
Σελίδα 32
... oxygen of the air . The burning body and the oxygen rush together so vigorously that heat and light are produced . The burning body sometimes disappears , as far as we can tell by our senses , but if we have the skill and the patience ...
... oxygen of the air . The burning body and the oxygen rush together so vigorously that heat and light are produced . The burning body sometimes disappears , as far as we can tell by our senses , but if we have the skill and the patience ...
Σελίδα 33
John Charles Hessler. united with oxygen , and we can collect the invisible materials that are formed . The white smoke formed when phosphorus burns contains both the phosphorus that was used up in burning and the oxygen that united with ...
John Charles Hessler. united with oxygen , and we can collect the invisible materials that are formed . The white smoke formed when phosphorus burns contains both the phosphorus that was used up in burning and the oxygen that united with ...
Σελίδα 35
... oxygen than when it entered the front of the stove ? Why ? 4. If we wish to put out a fire , what must we keep away from it ? How can this be done ? 5. Is water a combustible ? Is it a supporter of combustion ? When water is turned into ...
... oxygen than when it entered the front of the stove ? Why ? 4. If we wish to put out a fire , what must we keep away from it ? How can this be done ? 5. Is water a combustible ? Is it a supporter of combustion ? When water is turned into ...
Σελίδα 36
... Oxygen ? - You would naturally think that the easiest way to get oxygen un- mixed with nitrogen would be to remove the nitrogen of the air . But we must remember that the oxygen is the active gas , and that ... oxygen? - What is oxygen like?
... Oxygen ? - You would naturally think that the easiest way to get oxygen un- mixed with nitrogen would be to remove the nitrogen of the air . But we must remember that the oxygen is the active gas , and that ... oxygen? - What is oxygen like?
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Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
acid ammonia animals bacteria becomes birds blood body boiling bones bottle breathing bulb burning called candle carbon dioxide carry cause cells cerebrum changed cloth coal cold color cool copper covered dermis digestive earth eggs electric electric current epidermis feet fibers fire flame flowers force fruit give glass grow heat hydrochloric acid hydrogen insects inside iron larvæ layer learned leaves legumes light limewater liquid lungs machine magnet manganese dioxide material meat metal milk moon mouth muscles needle nerve nitrogen object organs oxide oxygen pass phosphorus piece pistil piston plants pole potassium chlorate pounds pressure produce pump push rays rock rubbed sal ammoniac salt seeds skin soil stamens starch steam stem stomata stove substances sugar sulphur sunlight surface temperature tissue trees tube warm weather weight wind wire wood yeast zinc
Δημοφιλή αποσπάσματα
Σελίδα 509 - Measures of Weight 10 milligrams (mg) =1 centigram eg 10 centigrams =1 decigram dg 10 decigrams =1 gram g 10 grams =1 dekagram Dg 10 dekagrams =1 hektogram Hg 10 hektograms =1 kilogram Kg...
Σελίδα 402 - THIS is the forest primeval. The murmuring pines and the hemlocks, Bearded with moss, and in garments green, indistinct in the twilight, Stand like Druids of old, with voices sad and prophetic, Stand like harpers hoar, with beards that rest on their bosoms...
Σελίδα 509 - Measures of Length 10 millimeters (mm.) . . . . =1 centimeter cm. 10 centimeters =1 decimeter dm: 10 decimeters =1 meter m. 10 meters =1 dekameter Dm. 10 dekameters =1 hektometer Hm. 10 hektometers =1 kilometer Km.
Σελίδα 509 - Area. 100 square millimeters (sq. mm.) =1 sq. centimeter (sq. cm.). 100 square centimeters = 1 sq. decimeter (sq. dm.). 100 square decimeters =1 sq. meter (sq. m.). 3. Cubic Measure, or Volume. The unit of volume is the liter, which is 1 cu. dm., or 1,000 cc 1,000 cubic millimeters (cu. mm.) = 1 cubic centimeter (cc). 1,000 cubic centimeters =1 cubic decimeter (cu. dm.). 1 cubic decimeter = 1 liter (1.). 10 liters =1 dekaliter (dl.). 10 dekaliters =1 hectoliter (hl.). 10 hectoliters = 1 kiloliter...
Σελίδα 105 - The known principal planets, in order of their distance from the Sun are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto.
Σελίδα 339 - Levers are divided into three classes: in the first class, the fulcrum ' is between the power and the weight ; in the second class, the fulcrum is...
Σελίδα 86 - The wind arrows show the wind to be moving in a direction opposite to the movement of the hands of a watch (counterclockwise) when it is laid, face up, on the map.
Σελίδα 243 - ... north pole of one magnet will attract the south pole of another, and the south pole of one will attract the north of another ; but the north...
Σελίδα 53 - The oxygen is carried by the blood to all parts of the body...
Σελίδα 331 - In the second class of levers th'e fulcrum is at one end and the power at the other, with the weight between them.