Science - Chemistry Assessment

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Matter

Anything that has weight and takes up space

Mass

Amount of particles in an object

Volume

The amount of space taken up by an object

What are the 3 states of matter?

Liquid, solid, and gas

Atoms

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

Molecule

A bond of two or more atoms

Compound

A bond of two or more atoms of a different element

Periodic table of elements

A chart containing all the different kinds of atoms

How many elements are there on the periodic table

118

What are vertical columns on the periodic table

Families/groups

What are horizontal rows on the periodic table

Periods

What does the atomic number represent

The amount of protons

What does the atomic mass represent

The amount of protons and neutrons combined

Mendeleev

Organized the periodic table by atomic mass and chemical properties

Mosely

Reorganized the periodic table by atomic number

What is all matter made out of?

Particles

What are atoms composed of?

Protons, neutrons, and electrons

Where are the protons in an atom?

The nucleus

Where are the neutrons in an atom?

The nucleus

Where are the electrons in an atom?

The electron cloud

What is the takeaway from the timeline?

Scientists build off of other scientists research and information

Periodic

Repeating at regular intervals

Which subatomic particle has a positive charge?

Proton

Which subatomic particle has no charge?

Neutron

Which subatomic particle has a negative charge?

Electron

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

Protons

Which subatomic particle has the same amount as protons?

Electrons

What do families have in common on the periodic table?

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

What happens as you move through the periods?

The energy level increases