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Questions and Answers
What did Leucippus and Democritus infer about all living and inanimate things?
What did Leucippus and Democritus infer about all living and inanimate things?
- They are composed of continuous substance that cannot be divided.
- They are composed of indivisible and invisible particles called atoms. (correct)
- They are composed of various elements that can be separated easily.
- They are composed of visible particles called molecules.
Why is a basic understanding of chemistry important for many subjects such as biology?
Why is a basic understanding of chemistry important for many subjects such as biology?
- To know the different chemical reactions occurring in the human body.
- To identify the elements present in nonliving things.
- To understand the composition of matter in living organisms. (correct)
- To analyze the physical properties of living organisms.
What is matter?
What is matter?
- Energy present in all living and nonliving things.
- The physical form of elements found in nature.
- Substances that are visible to the naked eye.
- Anything that has weight and occupies space. (correct)
Why does intuition suggest that all substances are made of minute particles?
Why does intuition suggest that all substances are made of minute particles?
What is the modern particulate nature of matter based on?
What is the modern particulate nature of matter based on?
According to John Dalton's atomic theory, what is the nature of atoms?
According to John Dalton's atomic theory, what is the nature of atoms?
Which phenomenon is characterized by the flow of matter from a region of lower concentration to a region of higher concentration through a semi-permeable membrane?
Which phenomenon is characterized by the flow of matter from a region of lower concentration to a region of higher concentration through a semi-permeable membrane?
Who identified the negatively charged electron in the cathode ray tube and deduced its properties?
Who identified the negatively charged electron in the cathode ray tube and deduced its properties?
What is the constant erratic or non-directional movement of tiny particles suspended in a medium known as?
What is the constant erratic or non-directional movement of tiny particles suspended in a medium known as?
According to J.J. Thomson's observations, how did the rays in the cathode ray tube behave?
According to J.J. Thomson's observations, how did the rays in the cathode ray tube behave?
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