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43 Cards in this Set
- Front
- Back
What is a chemical change?
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A change that that produces new substances.
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What is a physical change?
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A change that does not produce a new substance.
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What is the formula for calculating density?
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grams per cubic centimeter
(g/cm3)-solids |
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What are properties of Metals?
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malleable,ductile,luster,great conducter of electricity and heat
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What are properties of Nonmetals?
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brittle,not malleable,not ductile,poor conductors of heat/electricity
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What other separation techniques can be used to seperate mixtures?
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filtering,decanting,chromatography
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What are the two parts of a solution? Define both.
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The solvent is the substance that does the dissolving,the solute is the substance that gets dissolved.
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Define molecule.
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The smallest particle of a substance that retains the properties of the substance and is composed of one or more atoms.
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Define atom.
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The smallest unit of matter
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What is boiling point?
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The temperature at which a liquid changes to a vapor.
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What is melting point?
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The temperature at which a solid material becomes a liquid.
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What is matter?
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Anything that has mass and occupies space.
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What are valence electrons?
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Electrons in the outermost shell of an atom. The electrons that are gained or lost in a chemical reaction.
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What do group numbers have to do with valence electrons?
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For main group elements, the number of Valence electrons equals the element's group number.
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Where are protons located in an atom?
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Located at the center of the atom in the nucleus. Neutrons are also located here.
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Where are neutrons located in an atom?
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Located at the center of the atom in the nucleus. Protons are also located here.
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Where are electrons located in an atom?
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Located outside of the nucleus.
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What group is the element Calcium located?
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Alkali Earth
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What group is the element Lithium located?
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Group: Alkali Met.
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What group is the element Iron located?
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Group: Trans. Met.
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What group is the element Neon located?
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Group: Noble Gas
Hint: The elements Xenon and Helium are also a part of this group. |
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What group is the element Chlorine located?
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Group: Halogen
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What group is the element Sulfur located?
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Group: Non-Metal, Chalcogen
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What group is the element Aluminum located?
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Group: Metal
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What group is the element Xenon located?
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Group: Noble Gas
Hint: The elements Neon and Helium are also a part of this group. |
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What group is the element Helium
located? |
Group: Noble Gas
Hint: The elments Xenon amd Neon are also a part of this group. |
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What group is the element Hydrogen located?
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Group: Non-Metal
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What information does the Periodic Table of elements provide to anyone studying chemistry?
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The Periodic Table helps to predict chemical reactions. It is a helpful arrangement of the elements according to both their atomic number and the number of electrons in the outer orbit.
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What is a "triple beam balance" used for?
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A measuring insturment used to determine the mass of materials.
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List examples of physical properties of matter.
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color, smell, freezing point, boiling point, melting point infra-red spectrum, attraction (paramagnetic) or repulsion (diamagnetic) to magnets, opacity, viscosity and density.
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Describe the pH Scale in terms of acids and bases.
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1-6: acids
7: neutral 8-14: bases |
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Name the 5 parts of an atom. Write the electrical charge(if it applies)
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Electron, Nucleus, Neutron, Proton, Orbit (Shell)
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What is a chemical equation?
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An equation that expresses a chemical reaction. The symbols on the left of the equation denoting the substances before, and those on the right those after, the reaction.
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List an example of a chemical property of matter.
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heat of combustion, reactivity with water, PH, and electromotive force.
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Define pure substance.
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Matter that contains only one chemical substance.
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Define element.
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A pure substance which cannot be broken down by further chemical techniques.
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Define compound.
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A pure substance composed of two or more different atoms chemically bonded to one another.
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What is the difference between mixtures and compounds?
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A mixtures have two or more substances mixed together without chemical changes, while compounds have two or more substances bonded together by chemical reaction.
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In the following chemical equation, list the reactant(s:
NaCl + AgNO3 |
Sodium-Chlorine
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In the following chemical equation, list the reactant(s:
AgCl+ NaNO3 |
Silver Nitrate
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Which seperation technique would be best to use if you wanted to seperate a mixture of sand and salt?
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Filtration
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What is solubility?
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A substance's ability to dissolve
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What formula would you use to calculate the volume of a regular solid?
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Length x Width x Height (l x w x h)
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