What is a gas?
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What is a gas?
A) A state of matter with a definite shape
B) A state of matter with a definite volume
C) A state of matter that does not have a definite shape or volume
D) A state of matter that only exists in laboratories
Which of the following statements about gases is true?
A) Gases cannot be compressed
B) Gases have a fixed shape and volume
C) Gases can fill any space and spread out to fill the entire area available to them
D) Gases cannot mix with other gases
Which of the following is an example of a gas?
A) Water (H₂O)
B) Nitrogen (N₂)
C) Iron (Fe)
D) Salt (NaCl)
What is one of the uses of gases?
A) Building houses
B) Making jewelry
C) Cooking food
D) Writing books
Why is it important to handle gases safely?
A) Gases are always harmful to humans
B) Gases are flammable and can cause explosions
C) Gases have a strong odor that can be unpleasant
D) Gases cannot be stored for long periods