15535203
Descripción
Test por Watermelon 123, actualizado hace más de 1 año
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Creado por Watermelon 123
hace casi 6 años
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Pregunta 1
Pregunta
What is the ability to dissolve in water and to conduct electricity ?
Respuesta
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physical properties
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chemical properties
Pregunta 2
Pregunta
Water is an example of ...
Respuesta
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an element
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a homogeneous mixture
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a compound
Pregunta 3
Pregunta
When matter changes the most common form of energy released or absorbed is ELECTRICAL ENERGY
Respuesta
- True
- False
Pregunta 4
Pregunta
New substances are always formed when matter undergoes a
Respuesta
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Chemical Change
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Physical Change
Pregunta 5
Pregunta
Chemical energy is the energy
Respuesta
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stored in the bonds between atoms
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of moving, electrically charged particles
Pregunta 6
Pregunta
What is matter?
Respuesta
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anything that has mass but doesn't take up space
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anything that has mass and takes up space
Pregunta 7
Pregunta
What is a chemical property?
Respuesta
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properties that change into different substances
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properties that shange shapes and substances
Pregunta 8
Pregunta
What is an element?
Respuesta
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pure substances that cannot be broken down into other substances
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pure substances that are able to break down into other substances
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substances that turn into compounds when combined
Pregunta 9
Pregunta
What does the law of conservation of matter state.
Respuesta
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matter cannot be created or destroyed
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matter cannot be created but it can be destroyed
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matter can be created but it can't be truly destroyed
Pregunta 10
Pregunta
What is an endothermic reaction?
Respuesta
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change in which heat is taken
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change in which energy is taken
Pregunta 11
Pregunta
What are the three ways that compounds and mixtures differ?
Respuesta
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When elements are combined they form compounds having properties different from the uncombined elements each substance in a mixture has individual properties. Also, the parts of a mixture are not combined in a set ratio.
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When elements are combined they form compounds having properties different from the uncombined elements each substance in a mixture has individual properties. Also, the parts of a mixture are combined in a set ratio.
Pregunta 12
Pregunta
How does a physical change differ from a chemical change?
A physical change change in shape but is the same substance after the change. However the chemical change turns into a new substance.
Respuesta
- True
- False
Pregunta 13
Pregunta
How are changes in matter related to changes in energy?
Changes in matter are related to changes in energy because the substances change.
Respuesta
- True
- False
Pregunta 14
Pregunta
How do you know that the burning of candle wax is an exothermic change?
The burning of candle wax is an exothermic change because it produces carbon dioxide,water, and heat.
Respuesta
- True
- False
Pregunta 15
Pregunta
If two mixtures are mixed and the temp rises, did it absorb or release thermal energy?
It realeased thermal energy because the heat was let out and made the temperature rise.
Respuesta
- True
- False
Pregunta 16
Pregunta
What is the ratio of phosphorus atoms to oxygen atoms in the compound?
The ratio is two to four
Respuesta
- True
- False
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