Science - Chemistry Assessment

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Matter

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29 Terms
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Matter

Anything that has weight and takes up space

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Mass

Amount of particles in an object

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Volume

The amount of space taken up by an object

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What are the 3 states of matter?

Liquid, solid, and gas

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Atoms

Fundamental building blocks of chemistry and the smallest piece of an element and matter

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Molecule

A bond of two or more atoms

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Compound

A bond of two or more atoms of a different element

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Periodic table of elements

A chart containing all the different kinds of atoms

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How many elements are there on the periodic table

118

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What are vertical columns on the periodic table

Families/groups

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What are horizontal rows on the periodic table

Periods

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What does the atomic number represent

The amount of protons

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What does the atomic mass represent

The amount of protons and neutrons combined

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Mendeleev

Organized the periodic table by atomic mass and chemical properties

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Mosely

Reorganized the periodic table by atomic number

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What is all matter made out of?

Particles

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What are atoms composed of?

Protons, neutrons, and electrons

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Where are the protons in an atom?

The nucleus

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Where are the neutrons in an atom?

The nucleus

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Where are the electrons in an atom?

The electron cloud

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What is the takeaway from the timeline?

Scientists build off of other scientists research and information

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Periodic

Repeating at regular intervals

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Which subatomic particle has a positive charge?

Proton

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Which subatomic particle has no charge?

Neutron

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Which subatomic particle has a negative charge?

Electron

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Which subatomic particle gives the element its properties and identifies the element?

Protons

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Which subatomic particle has the same amount as protons?

Electrons

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What do families have in common on the periodic table?

The same amount of electrons in the valence level and have the same properties

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What happens as you move through the periods?

The energy level increases

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