| States of Matter | Changes of State of Matter | Physical and Chemical Changes | Physical and Chemical Properties | Matter Classification |
|---|---|---|---|---|
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Which are the names of the 5 states of matter?
Solid, liquid, gas, plasma, BEC
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Which is the name of the change of state from solid to liquid?
Melting
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A change is a conversion from one form to another. True or false?
True
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What is a property? What are they for?
It is a characteristic or capacity of a substance. Properties are useful because they help us to distinguish between substances from one another.
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Mention the two main categories into which matter is classified.
Pure substances and mixtures
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Fill in the blanks:
In the ___ state, the particles are very ordered and their potential energy is greater than the kinetic energy, but they do present a vibratory movement.
Solid
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What happens to the particles of an object when the object changes it state of matter due to a change in temperature or pressure?
The particles can either come closer or separate more between each other.
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I lit a match carelessly and got burned. What kind of change is it?
Chemical change.
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Mention 1 physical property and 1 chemical property.
The students mention it and the teacher verifies.
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What is
Answer 2
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From the following list, indicate which are the characteristics of the gas state:
1) Its potential energy is greater than the kinetic 2) They expand 3) They are incompressible 4) Its particles are in constant motion
2) They expand.
4) Its particles are in constant motion. |
From the different changes of state of matter, indicate which are exothermic
Exothermic: solidification, condensation and deposition
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Select the appropriate words to fill in the blanks (chemical, physical, properties, changes)
All transitions of states of matter are ___, whereas all states of matter are ___
All transitions of states of matter are PHYSICAL CHANGES, whereas all states of matter are PHYSICAL PROPERTIES
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Indicate if it is physical or chemical property in each of the cases:
a) Cesium reacts with water very violently. b) Sulfur is yellow in color.
a) Chemical Property
b) Physical Property |
What is
Answer 3
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Explain how is the volume, shape, compressibility and repulsion forces in solids, liquids and gases.
Solids have definite V and shape, incompressible, and low repulsion forces.
Liquids have definite V but indefinite shape, incompressible and medium repulsion forces. Gases have indefinite V and shape, compressible and high repulsion forces. |
Fill in the blanks:
The reason why ice melts, is because it ___ energy. Ice can also change from solid to ___ without going through the liquid state. This transition is known as _______, which is a _______ process.
The reason why ice melts, is because it ABSORBS energy. Ice can also change from solid to GAS without going through the liquid state. This transition is known as SUBLIMATION, which is a ENDOTHERMIC process.
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Indicate what type of exchange it is:
a) The appearance of the rainbow in the sky b) Carbon monoxide was released from the “boiler" and people suffocated
A) Physical change
B) Chemical change |
From the following sentence, identify chemical and physical properties:
"Granulated sugar turns clear and molten liquid sugar at 160°C. However it starts to turn into caramel at a 179°C. Even though there is a change of color, caramel does not exhibit toxic properties if consumed. Just remember too much of anything can be bad!"
The students mention it and the teacher verifies.
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What is
Answer 4
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What does it mean that plasma is an ionized gas? By begin an ionized gas which characteristic stands out from plasma? How can plasma be obtained? .
Plasma is also known as an ionized gas meaning that some electrons have been ripped off completely from the atoms that make up the gas. Because of this, plasma easily conducts electricity. Plasma is created when a gas is either exposed to a high temperature or a high voltage electricity is passed trough it.
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Explain the following diagram with the name of the changes of state and indicate if the change is a exothermic or endothermic process.
The students mention it and the teacher verifies.
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From the following sentence, identify the phrase where the physical change is found:
“Today's morning was complicated, I put water in the kettle to boil and suddenly the phone rang - it was my aunt; she wouldn't stop talking and we spent about 20 minutes on the phone! When I got back to the kitchen, most of the water had evaporated. Suddenly I realized that I forgot to put the milk in the fridge the night before so a gross smell came out from the bottle. What a morning!"
..most of the water had evaporated.
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What happens when a chemical property is measured?
A chemical change occurs.
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What is
Answer 5
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