Atom & Eve
An atom is the smallest piece of a(n)
An Element
A substance; only one kind of atom
Element
An atom that has gained or lost electrons.
Ion
The taste of a possible Acid
Sour taste
If the element Calcium has 20 protons, how many electrons would it have?
20
This negatively charged part of the atom travels around the nucleus.
The Electrons.
Which part of the periodic cell provided is the chemical symbol
Co
The process in which different types of atoms join and form a new substance.
Chemical Change
A base would feel..
Slippery
The compound NaHCO3 has how many atoms of Hydrogen?
1
The sum of what two parts of the atom make up the Atomic Mass.
Protons and neutrons.
Which part of the periodic cell provided is the atomic mass?
58.93
When atoms share electrons this is called a(n)
Covalent Bond
Determines the concentration of acids or bases in a solution.
The pH Scale
What are two things you can tell about an element based on its location on the periodic table?
Periods tells how many shells of electrons the element has, groups tell how many electrons are in the outer shell
The _________ is based on the number of protons in the nucleus.
Atomic Number
The vertical columns of the periodic table of elements.
Groups
Chemical symbols and numbers abbreviating the name of a compound.
Chemical Formula
Changes color when exposed to acid or base solutions
Indicator
Explain why all compounds are molecules but not all molecules are compounds.
Molecules are produced when two atoms of the same element combine, or two or more different elements combine through a chemical reaction. Compounds are molecules that have produced a chemical change.
Which scientist developed a simplified model of an atom.
Niels Bohr
The scientist who developed the periodic table of elements.
Dimitri Mendeleev
A reaction that occurs when a compound is broken down into simpler compounds.
Decomposition.
An ionic compound produced from a reaction between an acid and a base
Salt
Your little brother was just stung by a bee. What is something from your kitchen or bathroom that would help relieve the pain? Why would it work?
Possible answers: A paste made of baking soda and water, a dab of toothpaste, or milk of magnesia. A base neutralizes an acid.