- 1. Molecules with this formula have how many element?
A) 1 barium, 1 carbon, 3 oxygen
B) 2 barium, 2 carbon, 6 oxygen3n
C) 1 boron, 1 calcium, 3 oxygen
D) 1 boron, 3 carbon, 1 oxygen
- 2. Molecules with this formula have how many elements?
A) 1 calcium, 1 silicon, 9 argon, 10 helium
B) 1 copper, 1 sulfur, 9 oxygen, 10 hydrogen
C) 1 copper, 1 selenium, 5 aluminium, 5 hydrogen
D) 1 carbon, 1 tin, 4 oxygen, 10 hydrogen
- 3. When matter has a definite shape and volume it is
A) gas
B) solid
C) plasma
D) liquid
- 4. If a Coca Cola is more acidic than Orange Juice, this means that
A) All sodas have to have the same pH # for humans to be able to drink them
B) Acidic means it is more alkaline to drink
C) Coca Cola has a higher pH # than orange juice
D) Coca Cola has a lower pH # than Orange Juice
- 5. When shampoos and soaps are listed as pH balanced this means the pH is listed as
A) pH 7
B) pH 1
C) pH 14
D) ions and isotopes
- 6. In this image, the molecules to the left of the arrow are the ________ and the molecules to the right of the arrow are the ________.
A) reactants, products
B) products, reactants
C) products, products
D) reactants, reactants
- 7. Certain bacteria called acidophiles would most probably be found in waters with a pH range of?
A) 1 - 3
B) 6 = 8
C) 7
D) 12 - 14
- 8. Ammonia, which is alkaline (the opposite of acidic) has a pH of
A) 7
B) 9
C) 3
D) 14
- 9. The atomic number of an element is the number of it's
A) electrons
B) neutrons
C) protons
D) protons and neutrons
- 10. The atomic mass of an element is the mass of it's
A) protons
B) protons and neutrons
C) electrons and neutrons
D) neutrons
- 11. If an atom is electrically neutral (and has no charge) that means that
A) it has the same number of protons and neutrons
B) It has lost it's electrons
C) it has the same number of protons and electrons
D) it has the same atomic mass and atomic number
- 12. If you subtract the atomic number of an element from it's atomic mass, this will give you the # of _______ for that atom
A) protonic values
B) neutrons
C) electrons
D) protons
- 13. In the periodic table, the elements which are in a specific Family (which would be one column) are arranged by all having the same number of
A) atomic masses
B) valence electrons
C) electrons
D) protons
- 14. In various examples of the Periodic Table, the atomic ______ and atomic ______ both refer to the same thing
A) protons and neutrons
B) mass, number
C) mass, weight
D) number, weight
- 15. Drinking water that is pH balanced should have a pH of
A) 5
B) 7
C) 9
D) 4
- 16. The state of matter that assumes the shape of it's container
A) plasma
B) solid
C) liquid
D) gas
- 17. The state of matter that has neither a definite volume or a definite shape
A) liquid
B) solid
C) gas
D) plasma
- 18. The state of matter most common in the universe - stars are composed of this form of matter
A) liquid
B) solid
C) gas
D) plasma
- 19. Liquids with a pH lower than 7 are called __________ and liquids with a pH higher than 7 are called _______ .
A) alkaline, basic,
B) acidic, alkaline
C) alkaline, acidic
D) neutral, acidic
- 20. The law which states that whatever amounts of atoms are reactants in a particualr chemical reaction is the same as the amounts of those particular atoms in the products
A) Law of Products and Reactants
B) Conservation of Mass
C) Law of Conservation
D) Law of Chemical Reactions
- 21. Protons, neutrons and electrons make
A) the atomic number of an element
B) an atomic nucleus
C) the electric charge on an ion
D) atoms
- 22. Atoms of the same element that happen to have different numbers of neutrons are called _______ of that particular element.
A) ions
B) neutron dependent
C) molecules
D) isotopes
- 23. When atoms share electrons this is called ________________ and when one atoms gives it's electrons to another atom, this is called ______________
A) covalent bonding , ionic bonding
B) molecular bonding, ions
C) ionic bonding , covalent bonding
D) electron capture, electron repulsion
- 24. If an atom gains electrons, this means that the electric charge on that particular atom will now be
A) positive
B) negative
C) neutral
D) electronic
- 25. The part of an atom that has almost all of it's mass, but only a very very small part of it's volume is the
A) atomic nucleus
B) electron cloud
C) valence electron shell
D) neutron part
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