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VARVARA [1.3K]
2 years ago
7

What happens when two substances of different temperatures come in contact with each other?

Chemistry
2 answers:
pshichka [43]2 years ago
8 0
When two substances at different
temperatures come into contact, the
substance that is at higher temperature will transfer energy, in the form of heat, to the substance that is at lower temperature, until their temperatures get equal.
dimulka [17.4K]2 years ago
7 0

Answer:

The hotter one loses heat and the cooler one gains heat until they become equal in temperature.

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A one or two letter symbol indicating a particular element two words no spaces
Andreyy89

Answer:

The Symbols of elements is given by :

IUPAC : International Union Of Pure and Applied Chemistry .

Its is the Universally recognuised organisation which works on Chemical nomenclature and terminology.

Explanation:

According to IUPAC the elements are named according to mythological concept of country ,mineral , place , property and scientist.

Ex:Copper name comes from the old english word Cyprus.

Rules of Naming elements :

1. The first Alphabet of the element is always Capital.Example:-  

Sodium : Na  not ''na'

2. The second alphabet is always small .Example

Sodium : Na  not ''nA' or NA

3.For most of the elements ,The symbol of the element comes from the <u>first two words.</u>

Example : Hydrogen : H

Helium : He

Copper : Cu

Rules for naming elements having mass> 100

1. The names are derived directly from the atomic number .

Ex : 0 = nil    1= un    2=bi   3=tri

2. The name always ends with ''ium''

For example :

102 = Unnilbium

5 0
4 years ago
17. When 1 mol of the following substances react completely with oxygen, the
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I would say Na. Oxygen has 2 valence electrons and when reacting with other molecules, the ones with the fullest or emptiest shells will react the least. Both H2 and Na are in the Alkali Metals in the first row, but since H2 has 2 molecules, it would use more oxygen than Ana
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The answer would be D, all the above
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The objects motion will change
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