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21 Cards in this Set
- Front
- Back
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Atoms are the building blocks to what? |
Matter |
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Atoms combine to make what |
Elements |
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What does the nucleus contain |
Neutrons and Protons |
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What charge is the electron |
Negative |
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What charge is the proton |
Positive |
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Where can electrons be found |
Orbiting the nucleus in valence shells |
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What is the top number in an element's sign |
It's mass number |
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What is the bottom number in an element's sign |
It's atomic number |
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What does the atomic number give |
How many protons are in the nucleus |
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What does the mass number give |
The total number of particles in the nucleus |
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How do you find the total number of neutrons in the atom? |
Mass number - Protons |
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True or false? Isotopes are atoms of the same element which have different masses |
True |
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Isotopes contain the same number of ____ but different number of ____ |
Protons, neutrons |
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Vertical columns in the periodic table are called what? |
Groups |
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Horizontal rows in the periodic table are called what? |
Rows |
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All elements in a group have what? |
The same amount of electrons in the outer valence shell |
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All elements in the same period have what? |
The same number of valence shells |
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Ions are what? |
Atoms which have gained or lost electrons to achieve a full outer shell |
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Positive ions are called what? |
Cations |
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Negative ions are called what? |
Anions |
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After losing electron(s) the atom will be what? |
Unbalanced & gain a net charge of either negative or positive |
