2. How does the strength of the forces between the particles in a substance influence the temperature at which it changes from being a solid to being a liquid?
The hotter the solid becomes, the more the particles vibrate which causes the solid to expand. Bonds between atoms break and the atoms change places.
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3. What name is given to the temperature at which a liquid becomes a gas?
The boiling temperature
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4. Give the formula for: a) carbon dioxide b) ammonia
a) CO2 b) NH3
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5. What are the chemicals on the left side of the equation called?
reactants
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6. Blance these equations: a) Mg + 02 --> MgO b) H2SO4 + NaOH --> Na2SO4 + H2O
a) 2Mg + O2 --> 2MgO b) H2SO4 + 2NaOH --> Na2SO4 + 2H2O
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7. What is the difference between an endothermic and an exothermic reaction?
endothermic - take in energy from the surroundings exothermic -
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Other cards in this set
Card 2
Front
2. How does the strength of the forces between the particles in a substance influence the temperature at which it changes from being a solid to being a liquid?
Back
The hotter the solid becomes, the more the particles vibrate which causes the solid to expand. Bonds between atoms break and the atoms change places.
Card 3
Front
3. What name is given to the temperature at which a liquid becomes a gas?
Back
Card 4
Front
4. Give the formula for: a) carbon dioxide b) ammonia
Back
Card 5
Front
5. What are the chemicals on the left side of the equation called?
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