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Warm Up

Warm Up

Warm Up. 1. A small amount of a strong smelling sulfur compound is dissolved in natural gas to give gas a detectable odor. Which substance is the solvent? 2. True or False: A mixture has a set ratio of components.

By orien
(203 views)

Law of Definite Proportions

Law of Definite Proportions

Law of Definite Proportions. Clues to an invisible world. What is an element?. A substance which can’t be separated or divided into a different substance by normal chemical means. Each has characteristic properties. Humans have been learning about the elements for a long time.

By aldis
(215 views)

Discovery of atomic structure and periodicity

Discovery of atomic structure and periodicity

Discovery of atomic structure and periodicity. Dr. Orla Ni Dhubhghaill o.nidhubhghaill@ucc.ie. Early days - Philosophy. Aristotle (384 – 322 B.C.) Matter is continuous “Nature abhors a vacuum”. Democritus (460 – 371 B.C.) Matter made up of atoms and space.

By oleg
(93 views)

Compounds and Molecules

Compounds and Molecules

Compounds and Molecules. When two elements combine chemically it is called a compound. What is a compound?. How do you know how much of an element is in a compound?.

By bono
(84 views)

Elements, Compounds and Mixtures

Elements, Compounds and Mixtures

Elements, Compounds and Mixtures. Elements Reminder. An element is a pure substance that cannot be separated or broken down into simpler substances by physical or chemical means. A pure substance is a substance in which all of the “building-block” particles are identical.

By molly
(150 views)

Elements, Compounds and Mixtures

Elements, Compounds and Mixtures

Elements, Compounds and Mixtures. Elements Reminder. An element is a pure substance that cannot be separated or broken down into simpler substances by physical or chemical means. A pure substance is a substance in which all of the “building-block” particles are identical.

By lydie
(236 views)

Unit 1: Atomic Structure AP Chemistry

Unit 1: Atomic Structure AP Chemistry

Unit 1: Atomic Structure AP Chemistry. Evolution of Atomic Theory. Democritus – 400 B.C. Greek Philosopher Imagined particles that were indivisible Constituents of matter Atom comes from “atomos” Opposed Aristotle. Aristotle – 350 B.C.

By caspar
(194 views)

Introduction to CHEMISTRY

Introduction to CHEMISTRY

Introduction to CHEMISTRY. Composition of Matter. Everything in Universe is composed of matter Matter is anything that occupies space (has volume) and has mass. Everything in Universe is composed of matter. Matter is everything around you. Matter is anything made of atoms and

By elga
(121 views)

Compounds Science Anytime-Harcourt Brace

Compounds Science Anytime-Harcourt Brace

Compounds Science Anytime-Harcourt Brace. In this activity you will:. learn about compounds and how they are formed. write a paragraph using the facts that you find. Compounds. Compounds are formed when atoms of different elements are combined.

By vera-bray
(113 views)

Models of the Atom a Historical Perspective

Models of the Atom a Historical Perspective

Models of the Atom a Historical Perspective. fire. Democritus. earth. air. water. Aristotle. Early Greek Theories. 400 B.C. - Democritus thought matter could not be divided indefinitely. This led to the idea of atoms in a void.

By louis-robbins
(106 views)

What are characteristics for: Metal Nonmetal Metalloid

What are characteristics for: Metal Nonmetal Metalloid

What are characteristics for: Metal Nonmetal Metalloid. The Periodic Table is a useful way to arrange elements. The vertical columns are called groups . The horizontal rows are called periods . Elements in the same group have similar properties.

By breanna-kramer
(192 views)

Chlorine Cl 2

Chlorine Cl 2

Draw a line between the molecule and its name. Hydrogen chloride HCl. Chlorine Cl 2. Carbon dioxide CO 2. Methane CH 4. 8E Atoms and Elements. Objectives: There are billions of materials in our universe. Those materials are made up from about 100 elements only. atom. atom.

By bevis-browning
(169 views)

Atom – 	Basic unit of matter. Made of:

Atom – Basic unit of matter. Made of:

Atom – Basic unit of matter. Made of:. Protons – positive (+) charge Neutrons – neutral (no) charge Electrons – negative (-) charge. Atomic Number – The number of protons in the nucleus. Element – All of the atoms in a substance are alike. (Gold, Silver, Copper, Aluminum).

By fallon-pittman
(108 views)

Chemistry

Chemistry

Chemistry. Key Learning: Understand the properties of matter and changes that occur when matter interacts in an open and closed system. . Unit Essential Question: How do the properties of matter change when matter interacts in an open and closed system?. Matter. Reactions. Periodic Table.

By garrison-pearson
(71 views)

Class 9 Science NCERT Solutions - Is Matter around us Pure?

Class 9 Science NCERT Solutions - Is Matter around us Pure?

NCERT Solutions for Class 9 Science. CBSE Class 9th Science chapter-2 Is Matter around us Pure? Online & Offline school classes for Class 9 Science.

By takshilael
(161 views)

Elements, Compounds & Mixtures

Elements, Compounds & Mixtures

Elements, Compounds & Mixtures. Elements. An element is a pure substance (only 1 type of particle) that cannot be separated into simpler substances by physical or chemical means. http://www.privatehand.com/flash/elements.html. Element. Compounds.

By cpacheco
(0 views)

Warm Up

Warm Up

Warm Up. 1. A small amount of a strong smelling sulfur compound is dissolved in natural gas to give gas a detectable odor. Which substance is the solvent? 2. True or False: A mixture has a set ratio of components.

By juneu
(0 views)

Models of the Atom   a Historical Perspective

Models of the Atom a Historical Perspective

Models of the Atom a Historical Perspective. fire. Democritus. earth. air. water. Aristotle. Early Greek Theories. This led to the idea of atoms in a void. 400 B.C. - Democritus thought matter could not be divided indefinitely.

By jelwell
(3 views)

Models of the Atom   a Historical Perspective

Models of the Atom a Historical Perspective

Models of the Atom a Historical Perspective. fire. Democritus. earth. air. water. Aristotle. Early Greek Theories. This led to the idea of atoms are indestructible. 400 B.C. - Democritus thought matter could not be divided indefinitely.

By kellyf
(2 views)

Chlorine Cl 2

Chlorine Cl 2

Draw a line between the molecule and its name. Hydrogen chloride HCl. Chlorine Cl 2. Carbon dioxide CO 2. Methane CH 4. 8E Atoms and Elements. Objectives: There are billions of materials in our universe. Those materials are made up from about 100 elements only. atom. atom.

By cgalvan
(5 views)

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