Download Physical Science Chapter 4 Test

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Physical Science Chapter 4 Test
Completion
Complete each sentence or statement.
1. When elements combine to form a(n) ____________________, the resulting properties may be very different
from those of the elements that make it.
2. Unlike a mixture, a compound has a(n) ____________________ that is always the same.
3. The arrangement of ____________________ or ____________________ within a substance is its chemical
structure.
4. The chemical formula H2O means a water molecule contains one ____________________ for every two
____________________.
5. Formula units of salt, NaCl, contain equal numbers of ____________________ and
____________________.
6. The distance between the nuclei of two bonded atoms is referred to as ____________________.
7. The structural formula for a water molecule is ____________________.
8. The melting and boiling points of quartz are very high because of the compound's ____________________.
9. Networks can be made of bonded ____________________ or ____________________.
10. Atoms bond in compounds when their ____________________ interact.
11. In ionic compounds, the positively charged ions are formed from ____________________ elements.
12. When atoms form bonds and fill their outermost energy levels, they have an electronic arrangement similar to
that of a(n) ____________________.
13. The structure of silicon dioxide consists of a ____________________ of atoms.
14. When two chlorine atoms bond, they ____________________ a pair of electrons.
15. A(n) ____________________ bond is formed by the attraction between positively charged metal ions and the
____________________ around them.
16. A(n) ____________________ bond is formed when atoms share ____________________ of electrons.
17. Most covalent compounds have relatively ____________________ melting points.
18. Because polyatomic ions are made of covalently bonded atoms that have either gained or lost electrons, they
behave like simple ____________________.
19. A compound whose molecules contain one boron atom and three fluorine atoms would be named
____________________.
20. A compound consisting of Br– and Cd2+ ions would be named ____________________.
21. A compound consisting of Cr3+ ions and OH– ions would be named ____________________.
22. The charge of each titanium ion in the ionic compound TiO2 is ____________________.
23. The charge of each iron ion in the ionic compound FeS is ____________________.
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24. The chemical formula for the ionic compound consisting of oxide ions and nickel(III) ions is
____________________.
25. The chemical formula for the ionic compound consisting of nitride ions and titanium(III) ions is
____________________.
26. The simplest formula for a covalent compound is its ____________________ formula.
27. A compound's ____________________ formula tells you how many atoms of each type are in one molecule.
28. Each carbon atom can form a total of ____________________ bonds.
29. In addition to carbon, organic compounds almost always contain ____________________.
30. When a compound is made of only carbon and hydrogen atoms it is called a(n) ____________________.
31. Simple organic compounds that contain a hydroxyl group, –OH, are called ____________________.
32. ____________________ are compounds that have repeating subunits.
33. Organic compounds with carbon-carbon double bonds are referred to as ____________________.
34. Both starches and sugars are made of the elements ____________________, ____________________, and
____________________.
35. A(n) ____________________ is a polymer made of bonded amino acids.
36. DNA can ____________________ itself because it is made of two strands that can be separated.
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ID: A
Physical Science Chapter 4 Test
Answer Section
COMPLETION
1.
2.
3.
4.
5.
6.
compound
chemical formula
atoms; ions
oxygen atom; hydrogen atoms
sodium ions; chloride ions
bond length
7.
8. network structure
structure
9. atoms; ions
10. valence electrons
11. metal
12. noble gas
13. network
14. share
15. metallic; electrons
16. covalent; pairs
17. low
18. ions
19. boron trifluoride
20. cadmium(II) bromide
21. chromium(III) hydroxide
22. Ti4+
23. Fe2+
24. Ni2O3
25. TiN
26. empirical
27. molecular
28. four
29. hydrogen
30. hydrocarbon
31. alcohols
32. Polymers
33. alkenes
34. carbon, hydrogen, oxygen
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35. protein
36. copy
replicate
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