Created from Youtube video: https://www.youtube.com/watch?v=AO5QqtXuWrwvideoConcepts covered:physical properties, chemical properties, states of matter, energy, chemical changes
The video explains the differences between physical and chemical properties and changes, emphasizing that physical properties can be observed without forming a new substance, while chemical properties involve a substance's ability to form new substances through reactions. It also discusses the states of matter, the concept of energy, and how physical and chemical changes can be identified, providing examples such as rusting iron and dissolving sugar in water.
chapter
1
Physical and Chemical Properties and Changes
Concepts covered:physical properties, chemical properties, states of matter, energy, chemical changes
The video explains the differences between physical and chemical properties and changes, emphasizing that physical properties can be observed without forming a new substance, while chemical properties involve a substance's ability to form new substances through reactions. It also discusses the states of matter, the concept of energy, and how physical and chemical changes can be identified, providing examples such as rusting iron and dissolving sugar in water.
Question 1
Energy is not considered matter.
Question 2
What happens during sublimation?
Question 3
The ability to react with another substance is a _____ property.
Question 4
CASE STUDY: A factory is considering switching from liquid to gas fuel.
What is a key consideration for this switch?
Question 5
A chemical change results in a new substance.
Question 6
What is a qualitative property?
Question 7
Energy is not matter because it lacks _____ and volume.
Question 8
CASE STUDY: A scientist observes a metal reacting with acid.
What type of property is being observed?
Question 9
Solids are highly compressible compared to gases.
Question 10
What defines a chemical property?
Question 11
The state of matter with definite shape is _____.
Question 12
Dissolving sugar in water is a physical change.
Question 13
How does gas differ from solids?
Question 14
A change in molecular structure indicates a _____ change.
Question 15
Qualitative properties are always quantitative.
Question 16
What indicates a physical change?
Question 17
Dissolving sugar in water is a _____ property.
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