Name:______Date:______Per:____
1. The amount of matter in an object determines its______, whereas the amount of space an object takes up determines its______.
a. volume, mass b. weight, volume c. density, volume d. mass, volume
2. Sodium, chlorine, and aluminum are all alike because they all three____
a. are compounds b. are nonmetals c. have one valence electron d. have 3 energy levels
3. Which of the following has properties most similar to oxygen?
a. nitrogen b. potassium c. sulfur d. neon
4. A boron model is made of____
a. 5 protons, 5 neutrons, and 5 electrons
b. 5 protons, 6 neutrons, and 11 electrons
c. 5 protons, 6 neutrons, and 5 electrons
d. 5 protons, 6 neutrons, and 6 electrons
5. Which of these statements is true about an atom of chromium?
a. It has more protons than electrons.
b. It has an atomic number of 51.996.
c. It has fewer parts than an atom of Iron.
d. It has more electrons than neutrons.
6. All elements in the same period have the same number of ______.
7. Which element is the only element in the 3rd period that has 8 electrons in its outermost energy level? ____________
8. The below model best represents a _____
a. helium atom
b. carbon atom
c. helium ion
d. hydrogen atom
9. What does the atomic mass tell you about an atom?
a. the mass of its protons, electrons, and neutrons
b. the mass of its protons and electrons
c. the mass of its protons
d. the mass of its protons and neutrons
10. How many total atoms are in the following chemical formula? 2 CuSO4
______
11. Electron shells that are_____ tend to not react with other elements or chemicals.
a. empty b. not full c. full d. unstable
12. True or False. It is impossible to determine the exact location of electrons in the atom at any moment.
______
13. Jose is trying to identify a sample of an unknown element. The element is a metal that is shiny, a good conductor of heat and electricity, and bends without breaking. Which element is the sample most likely to be?
a. carbon b. neon c. sulfur d. copper
14. Which of these best describes one of the subatomic particles that could be found in the nucleus of an atom?
a. it has mass but no charge b. it has no mass and a positive charge
c. it has a large mass and a negative charge d. it has a small mass and a negative charge
15. Which state of matter has the most orderly arrangement of atoms and allows the least movement of those atoms?
a. liquid b. gas c. plasma d. solid
16. The periodic table organizes elements into vertical columns or ______.
17. If an element has 11 protons and 12 neutrons, what is the atomic mass of the element?
______
18. Even though we use the Bohr model, we know that electrons are —
a. in orbits like the planets around the sun
b. in a series of energy levels outside of the nucleus
c. inside of the nucleus
19. Atoms bond with other atoms based on their valence electrons, when aluminum bonds with other atoms it will likely give away how many electrons?
a. 8 electrons b. 1 electron c. 2 electrons d. 3 electrons
20. Which element would react with the element shown below?
a. fluorine b. neon c. sodium d. helium
21. Chlorine and bromine have the same number of__
a. electron orbitals (energy levels) b. valence electrons
c. protons d. neutrons
22. In the chemical formula H2SO4, what does the subscript 4 represent?
a. atoms b. compounds c. neutrons d. electrons
23. In the formula Ca(OH)2, how many oxygen atoms are present?
______
24. An atom has a neutral charge. Which of the following must be true about the atom? It has__
a. more neutrons than protons b. more neutrons than electrons
c. the same number of electrons and protons d. none of the above
25. Which element has the same number of electrons in the outermost energy level as Calcium?
a. Lithium b. Magnesium c. Hydrogen d. Boron
26. Draw a Bohr model of a beryllium atom. (label the protons, neutrons, electrons, and nucleus)
27. How many electrons can the 2nd energy level hold?
a. 8 b. 2 c. 16 d. 1
28. A pure substance made of 1 type of atom is a(n) _
a. molecule b. compound c. chemical formula d. element
29. The ______determine the identity of an element.
a. electrons b. neutrons c. protons d. quarks
30. True or False. An atom’s volume is mostly the empty space of the electron cloud.
______