Science Chapter 7 Lesson 1: Classifying Matter

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Questions and Answers

What is anything that has mass and takes up space?

Matter (correct)

Substance

Element

Atom

What is a small particle that is a building block of matter?

Atom

What is matter with a composition that is always the same?

Substance

What is a substance that consists of just one type of atom?

Element Signup and view all the answers

What type of substance contains atoms of two or more different elements chemically bonded together?

Compound Signup and view all the answers

What does it mean to form a solution by mixing evenly?

Dissolve Signup and view all the answers

What is matter that can vary in composition?

Mixture Signup and view all the answers

What type of mixture has individual substances that are evenly mixed?

Homogeneous mixture Signup and view all the answers

What type of mixture has individual substances that are not evenly mixed?

Heterogeneous mixture Signup and view all the answers

Explain why aluminum is a substance.

A given substance is always made up of the same combination(s) of atoms. Any sample of aluminum is always made up of the same type of atoms. Signup and view all the answers

The number of _________ always differs in atoms of different elements.

protons Signup and view all the answers

Distinguish between a heterogeneous mixture and a homogeneous mixture.

Heterogeneous mixtures are not evenly mixed, while homogeneous mixtures are evenly mixed. Signup and view all the answers

Substances and mixtures are two types of ____________.

matter Signup and view all the answers

Which term describes matter that is a substance made of different kinds of atoms bonded together?

Compounds Signup and view all the answers

The formula AgNO3 represents a compound made of which atoms?

1 Ag, 1 N, 3 O Signup and view all the answers

Which is an example of an element?

Sodium Signup and view all the answers

Which describes how mixtures differ from substances?

Mixtures can be separated physically Signup and view all the answers

Which is an example of a substance?

Water Signup and view all the answers

Study Notes

Classifying Matter

Matter: Defined as anything that has mass and occupies space.
Atom: The smallest particle that serves as the fundamental building block of matter.
Substance: A type of matter with a consistent composition throughout; remains the same regardless of its form.
Element: A pure substance composed of only one type of atom, represents the simplest form of matter.
Compound: A substance formed when two or more different elements are chemically bonded together, creating a new material with unique properties.
Dissolve: The process of forming a solution by evenly mixing a solute into a solvent.
Mixture: A physical combination of two or more substances that retain their individual properties; can vary in composition.
Homogeneous Mixture: A mixture in which the components are evenly distributed, resulting in a uniform composition throughout.
Heterogeneous Mixture: A mixture where the components are not evenly mixed, leading to different compositions in various samples.

Key Distinctions

Aluminum as a Substance: Always made from the same type of atom, thus it is classified as a substance like other examples (oxygen, sugar, water).
Protons in Atoms: The number of protons distinguishes atoms of different elements, determining their unique characteristics.
Homogeneous vs. Heterogeneous Mixtures:
- Heterogeneous mixtures can have varying compositions, while homogeneous mixtures have a uniform composition across different samples.

Relationships and Examples

Matter consists of two primary categories: substances and mixtures.
Compounds are defined as substances formed from different types of atoms chemically bonded.
Example of Compound: AgNO3 is made of 1 silver (Ag), 1 nitrogen (N), and 3 oxygen (O) atoms.
Element Example: Sodium (Na) is an example of an element, distinguishing it from compounds and mixtures.
Mixture Characteristics: Mixtures can be separated through physical means, unlike substances which are uniform.
Substance Example: Water (H2O) is a specific example of a pure substance, in contrast to mixtures like lemonade or soil.

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Description

Explore the fundamental concepts of matter in this quiz covering Chapter 7 Lesson 1 of your science curriculum. Learn key definitions including matter, atoms, substances, and elements through engaging flashcards designed to reinforce your understanding. Perfect for students looking to solidify their comprehension of classifying matter.