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Questions and Answers
Chemistry is the study of ______ & the ______ it undergoes.
matter; changes
What can be physically separated?
Mixture
What is a form of matter that has a uniform, definite composition and discrete properties?
Compound
An element consists of only one type of substance and has a fixed composition.
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What is the smallest particle of an element that has the properties of that element?
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What consists of two or more atoms joined by strong forces?
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Which of the following statements is true regarding elements and molecules? (Select all that apply)
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What can have a net positive or negative charge?
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Who formulated the atomic theory based on experiments?
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Study Notes
Foundation in Science
- Chemistry is the study of matter, its properties, and the changes it undergoes.
- Matter can be physically separated and exists in different forms.
- A substance with a uniform and definite composition is classified as a compound or element.
- Mixtures can be categorized into homogeneous (uniform composition) and heterogeneous (distinct, separate components).
Elements and Compounds
- An element is a substance consisting of only one type of atom with a fixed composition.
- A compound consists of two or more atoms joined by chemical bonds, forming a distinct substance.
Atoms and Molecules
- An atom is the smallest particle of an element with the properties of that element; atoms are very small and light.
- Most elements exist as molecules, which are formed by two or more atoms bonded together.
- Molecules can consist of atoms of the same element or different elements, exhibiting a range of properties.
Atomic Theory
- Atoms and molecules can carry a net positive or negative charge.
- The term "atom" comes from the Greek word “atomos,” meaning indivisible.
- An early proponent of atomic theory formulated his ideas based on experimental observations, suggesting the fundamental existence of atoms.
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Description
This quiz covers foundational concepts in science, particularly focusing on chemistry. It includes various processes and properties of matter which are fundamental to understanding chemical reactions and physical changes. Prepare to test your knowledge in science basics relevant to the July 2024 semester.
