ATOMS
Atoms are the __________ blocks of matter.
What is Building
Neutrons have __________ electric charge.
What is electrically neutral? (no electric charge)
Protons have a __________ electric charge.
What is a positive charge?
Acids taste __________ (but never taste chemicals!).
What are sour?
Bases feel __________.
What is slippery or soapy (to touch)?
The pH scale ranges from __________ to __________.
What is 0 to14?
What are protons, neutrons, and electrons?
Neutrons add __________ to the atom.
What is mass?
The number of protons determines the __________.
What is the element?
Acids react with metals to produce __________ gas.
What is Hydrogen gas?
Bases taste __________ (but never taste chemicals!)
A pH of 0 is most __________, while a pH of 14 is most __________.
What is acidic, most basic?
The __________ is the center of the atom where protons and neutrons are found.
What is the nucleus?
The number of neutrons can __________ in atoms of the same element.
What is vary?
A hydrogen atom has __________ proton(s)
What is one?
Acids turn blue litmus paper __________.
What is red?
Bases turn red litmus paper __________.
What is blue?
A pH of 7 is considered __________.
What is neutral?
What is the charge of electrons?
What is negative
Where are neutrons found in an atom?
What is the nucleus?
What is the role of protons in determining the identity of an element?
What is an atomic number?
Name one common acid you use at home.
What is acetic acid (in vinegar), ketchup, citric acid,
Name one common base you use at home.
What is baking soda? (also, soap, toothpaste, bleach, ammonia, laundry soap)
Each whole number on the pH scale represents a ________-fold change in H⁺ concentration.
What is ten-fold?
What is the atomic number of an element?
What are the number of protons in the nucleus of an atom of that element?
What is the mass of a neutron compared to a proton?
What is slightly greater (almost 0.1%)?
How many protons are in a carbon atom?
What is six?
What pH value do acids typically have?
What is less than 7?
What pH value do bases typically have?
What is greater than 7?
A pH lower than 7 indicate _________ about a solution?
What is acidic?