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Chemistry /Introduction to Matter & Measurement

Introduction to Matter & Measurement

Chemistry10 CardsCreated about 2 months ago

This deck covers key concepts from CHEM1012A Chapter 1, including the study of chemistry, classification of matter, properties, and units of measurement.

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What is chemistry?

Chemistry is the branch of science concerned with the substances of which matter is composed, their properties, reactions, and the use of these reactions to form new substances.

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Key Terms

Term

Definition

What is chemistry?

Chemistry is the branch of science concerned with the substances of which matter is composed, their properties, reactions, and the use of these reacti...

What defines matter?

Matter is anything that has mass and takes up space.

What are the states of matter?

The states of matter are solid, liquid, and gas.

What distinguishes a pure substance from a mixture?

A pure substance has a constant composition and distinct properties, while a mixture consists of two or more substances that retain their individual p...

What is a physical change?

A physical change is a change in matter that does not alter the chemical composition of a substance.

What is a chemical change?

A chemical change results in the formation of new substances with different properties.

What is the SI unit for temperature?

The SI unit for temperature is Kelvin (K).

How is density defined?

Density is the mass of a substance per unit volume, commonly expressed in g/cm³ or g/mL.

What is the difference between accuracy and precision?

Accuracy refers to how close a measurement is to the true value, while precision indicates how close repeated measurements are to each other.

What are intensive and extensive properties?

Intensive properties do not depend on the amount of substance (e.g., density), while extensive properties do (e.g., mass).

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Introduction to Matter & Measurement

Term	Definition
What is chemistry?	Chemistry is the branch of science concerned with the substances of which matter is composed, their properties, reactions, and the use of these reactions to form new substances.
What defines matter?	Matter is anything that has mass and takes up space.
What are the states of matter?	The states of matter are solid, liquid, and gas.
What distinguishes a pure substance from a mixture?	A pure substance has a constant composition and distinct properties, while a mixture consists of two or more substances that retain their individual properties.
What is a physical change?	A physical change is a change in matter that does not alter the chemical composition of a substance.
What is a chemical change?	A chemical change results in the formation of new substances with different properties.
What is the SI unit for temperature?	The SI unit for temperature is Kelvin (K).
How is density defined?	Density is the mass of a substance per unit volume, commonly expressed in g/cm³ or g/mL.
What is the difference between accuracy and precision?	Accuracy refers to how close a measurement is to the true value, while precision indicates how close repeated measurements are to each other.
What are intensive and extensive properties?	Intensive properties do not depend on the amount of substance (e.g., density), while extensive properties do (e.g., mass).