Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Pure substances that cannot be broken down into any simpler substances. | Elements |
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| A substance formed from the chemical combination of two or more elements that then act as a unique substance. | Compound |
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| The smallest particle of an element that still has the same chemical properties of the element | Atom |
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| The ______ is at the center of an atom and contains most of its mass | Nucleus |
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| What two types of particles are in a nucleus | Neutrons and Protons |
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| This particle has no electrical charge; they stay neutral | Neutrons |
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| This particle has a positive electrical charge | Protons |
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| The number of protons in an atom of an element is its | Atomic number |
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| The _______ _______ of an element is the number of protons added to the number of neutrons | Atomic mass |
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| Atoms of the same element that have different atomic masses are called | Isotopes |
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| Atoms also contain _____, which each have a small mass and a negative electrical charge | Electrons |
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| The ________ ________ is a chart that shows the elements in order of increasing atomic number | Periodic table |
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| Elements belong to 1 of 3 groups, list the three groups | Metals, Nonmetals, and Metalloids |
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| ________ conduct heat and electricity, become shiny when polished, Melt at height temperatures and can be easily reshaped | Metals |
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| _________ have a dull surface, melt at lower temperatures, and tend to break when bent | Nonmetals |
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| _______ have some properties of metals and some of Nonmetals. | Metalloids |
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| Name a common compound? | Table salt |
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| A _______ ________ is a simple way to indicate the composition of elements in a compound | Chemical formula |
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| What is the chemical formula for sodium chloride? | NaCl |
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| What is the chemical formula for carbon dioxide? | CO2 |
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| A ________ is the smallest particle of a compound that still has all qualities of that compound | Molecule |
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| What does C stand for? | Carbon |
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| What does O stand for? | Oxygen |
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| What does Na stand for? | Sodium |
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| What does Cl stand for? | Chlorine |
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| What is the chemical formula for Water? | H2O |
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| What does the H stand for | Hydrogen |
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| What does the O stand for | Oxygen |
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| Who formulated the atomic theory? | John Dalton |
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| Who was the Russian scientist that arranged the elements in the order of their atomic masses? | Dmitri Mendeleev |
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| What does the word Periodic refer to? | A repeating pattern |
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Created by:
Coramae67