Cara Wallin

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United States - Pennsylvania - Philadelphia
Cara Wallin
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Power Point slide intended for 6th-8th grade science. It discusses the physical properties of matter such as density of solids and liquids. The slides also discuss how things undergo physical change.
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Benefits of being Multicellular Larger size Longer life Specialization Tissue-A group of cells that work together to perform a specific job. Organ-A group of tissues working together to carry out a specialized function of the body. An Organ System-A
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When gas molecules are heated the molecules move faster (more energy) causing them to rise. When gas molecules are hot it causes their container to expand. When gas molecules are cold molecules vibrate slower and move slowly (less energy) causing
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Changes of states-The change of a substance from one physical form to another. Solids least amount of energy, liquids more energy than solids, gases the most amount of energy. Energy must be added or removed to have a change of state. Melting-The
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A MIXTURE is a combination of two or more substances that are NOT chemically combined. Because no chemical change occurs when a mixture is created, each substance in the mixture has the same chemical makeup it had before the mixture formed. All
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Cells need energy to work properly. This includes dividing and creating new cells. Cell divisions allows organisms to repair and grow. These slides discuss cells, heredity, and classification. In these particular slides, it discusses osmosis,
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Compound-A substance made up of atoms of two or more different elements joined by chemical bonds. When compounds are formed a new substance is created. Elements join in a specific ratio according to their masses to form a compound. Each compound has
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Pigments are molecules that absorb light energy. Chlorophyll is the main pigment in plants. This is what gives plants their green color. Chloroplasts are the organelles where chlorophyll is located. Photosynthesis is the process by which plants use
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Power point slides intended for 6th-8th graders. Discusses the chemical changes of matter.
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Pure Substance-A substance in which there is only one type of particle. An Element- A pure substance that cannot be separated into simpler substances by physical or chemical means. Elements are separated by similar characteristics. Individual
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The Cell Cycle is the life cycle of a cell. Growth and repair are the reasons why cells are produced. Chromosomes are the structures that DNA is organized into. Binary fission is when the cell splits into two parts. This creates two identical cells.
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This is a powerpoint slide intended for grades 6-8. It is the introduction of matter, which includes finding volume of liquids and irregular shaped objects. The slides will also discuss how to find mass of an object and how to change that to
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Discusses solids, liquids, and gases.
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Atoms are extremely small. The nucleus is the small, dense, positively charged center of the atom. Proton a subatomic particle that has a positive charge and is found in the nucleus of an atom. Neutron a subatomic particle that has no charge and
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Democritus-named the atom atom is the smallest particle into which an element can be divided and still be the same substance! Atoms are seen with an electron microscope. Dalton’s Atomic Theory All substances are made of atoms. Atoms are small
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