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ATOMS
MOLECULES
ELEMENTS
PERIODIC TABLE
MATTER
100
An atom is the simplest particle of _____________ that can exist.
What is matter?
100
A molecule is two or more _______________ bonded together.
What are atoms?
100
The ________________________ organizes all known elements.
What is the Periodic Table?
100
The Period Table of Elements categorizes elements according to the properties of their ______________, which are the smallest unit of an element.
What are atoms?
100

What is the phase change from solid to gas?

What is Sublimation

200
Particle of an atom with a negative charge.
What is an electron?
200
Atoms bond together to create molecules by either gaining or losing these.
What are electrons?
200
The letter abbreviation of an element is called the ___________________.
What is the element symbol or chemical symbol?
200
Elements are listed by the number of protons in the atom’s nuclei. What is this number called?
What is the atomic number?
200

What are the states of matter?

What is solid, liquid, gas, plasma?

300
Particle of an atom with a positive charge, located in the ____________.
What is a proton/nucleus?
300
Each shell can hold only a certain number of _____________ which determines what kind of atoms each atom can __________________ with.
What are electrons/bonds?
300
The configuration of protons, neutrons and electrons in an element’s atom is what makes one element _______________________ from another element.
What is different or unique?
300
What does the number of protons plus the number of neutrons equal?
What is the atomic mass?
300
What is the phase change from liquid to solid?

What is freezing?

400
What do electrons orbit around the nucleus in?
What is electron shell or electron cloud?
400
What do the little numbers next to the letters in the formula of a molecule represent?
Numbers equal how many atoms of each element are in molecule.
400

If the element gold has 79 protons and 118 neutrons, how many electrons does it have?

What is 39 electrons?

400
What are horizontal categories of the period table? These categories determine how many electron shells an element’s atoms have.
What are periods?
400
The process of matter changing from a solid to a liquid is called _________________.
What is melting?
500
The number of ________________ in an atom is equal to the number of _________________ in an atom.
What are protons/electrons?
500
A water molecule is represented as H2O. How many hydrogen and oxygen atoms are in this molecule?
What are 2 hydrogen and 1 oxygen atoms?
500
If you know the atomic number and the atomic mass of an element, how do you calculate the number of neutrons in an element’s atom?
What is atomic mass – atomic number = # of neutrons
500
What are vertical categories of the period table? These categories indicate how many electrons are in an atom’s outer shell.
What are groups?
500
The process of matter changing from a gas to a liquid is called ___________________.
What is condensation?