In open system such as campfire matter can be exchanged between system and surroundings.
Matter in chemistry, is defined as any kind of substance that has mass and occupies space that means it has volume .Matter is composed up of atoms which may or not be of same type.
Atoms are further made up of sub atomic particles which are the protons ,neutrons and the electrons .The matter can exist in various states such as solids, liquids and gases depending on the conditions of temperature and pressure.
The states of matter are inter convertible into each other by changing the parameters of temperature and pressure.In open systems which are not limited by the boundaries exchange of matter can take place between system and surroundings .
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A. By direct or indirect contact between objects at different temperatures.
B. Only by direct contact between objects at different temperatures.
C. Only by indirect contact between objects at different temperatures.
D. Heat can never be transferred between objects.
1.the higher the temperature of something, the greater its _______________
2. the change in state from gas to liquid is called_______________
3. energy that comes from bonds within matter is called_________________
4. the change in state from liquid to gas is called_____________
5. gas bubbles forming throughout the liquid is called_______________
6. liquid changing to gas only at the surface is called_________________
7. the change in state from solid to liquid is called____________
8. the change in state from liquid to solid is called____________
9. the___________states that during any change, the amount of energy stays the same
10. another term for a chemical change is a_____________
11. in____________, particles pass directly from solid to gas
words:
chemical energy
thermal energy
evaporation
melting
freezing
boiling
law of conservation
vaporization
condensation
sublimation
chemical reaction