Matter
This state of matter have molecules moving the slowest.
This is at the center of every atom.
What is a nucleus?
This is what I can find on the Periodic Table.
What are all the elements that have been discovered?
This causes a molecule to form.
When two atoms combine?
This cannot be broken down into something simpler.
What is an element?
This causes a solid to change to a liquid.
What is heat?
These two particles make up the nucleus of an atom.
What are protons and neutrons?
What an element's atomic number represents.
What is the number of protons in the element?
This is a molecule that is formed from two or more different types of atoms.
What is a compound?
This needs to occur in order for elements to form a compound.
What is a chemical reaction?
This occurs when a liquid turns to a gas.
What is evaporation?
These circle the nucleus and have a negative charge.
What are electrons?
When scientists see the letters “Au,” they know it means “gold.” Au represents this on the periodic table.
What is the element's symbol?
This is the chemical formula for water.
What is H₂O?
The chemical formula of 2 atoms of aluminum (Al) and 3 atoms of oxygen (O).
What is Al₂O₃?
What is a gas?
The following determines the type of element that an atom makesIn an atom, the number of protons are equal to these.
What are the number of protons?
What is water is a compound?
The is the smallest part of a molecule.
What is an atom?
In a chemical reaction, atoms rearrange, but the total number ____________________.
What is stays the same?
This happens when water reaches its boiling point.
What is turn from a liquid to a gas?
In an atom, what is the number of protons equal to?
What is the number of electrons?
This scientist is known for creating the Periodic Table.
Who is Mendeleev?
This molecule is needed for plants to do photosynthesis.
What is CO₂?
What is 2MgO?