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Test your basic knowledge |
Basic Chemistry
Start Test
Study First
Subjects
:
science
,
chemistry
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A covalent bond in which one pair of electrons is shared
molecule
neutron
single bond
valence electrons
2. Atoms that are held together by covalent bonds
molecule
structural formula
double bond
organic compound
3. Identifies a specific element; equals the number of protons in an atom of each element
single bond
matter
isotope
atomic number
4. Indicates the number and types of atoms in a molecule
product
chemical formula
nucleus
proton
5. Atoms that have lost or gained electrons
chemical reaction
reactant
double bond
ion
6. Indicates the formation of new substances from previous substances
chemical reaction
valence electrons
matter
single bond
7. Subatomic particle having a positive charge; found in nucleus
inorganic compound
proton
chemical reaction
matter
8. Anything that occupies space and has mass
matter
chemical reaction
reactant
chemical reaction
9. The smallest particle of an element that retains the properties of the element
atomic number
atom
compound
inorganic compound
10. Subatomic particle having a negative charge; not in nucleus but surrounds it
electron
double bond
atom
inorganic compound
11. Protons and neutrons together; make up the center of an atom
structural formula
radioactive isotope
reactant
nucleus
12. Ending materials of a reaction; found on right side of chemical equation
ionic bond
atomic number
product
chemical reaction
13. Atoms having the same numbers of protons but different numbers of neutrons
product
covalent bond
ionic bond
isotope
14. A covalent bond in which one pair of electrons is shared
matter
neutron
single bond
double bond
15. Subatomic particle without a charge; found in nucleus
ionic bond
chemical reaction
neutron
inorganic compound
16. Interaction of substances that lead to the formation of new substances
single bond
element
matter
chemical reaction
17. Anything that occupies space and has mass
compound
structural formula
matter
structural formula
18. Protons and neutrons together; make up the center of an atom
nucleus
structural formula
ionic bond
proton
19. Subatomic particle having a positive charge; found in nucleus
structural formula
isotope
reactant
proton
20. Subatomic particle without a charge; found in nucleus
valence electrons
neutron
structural formula
matter
21. Occurs when atoms transfer electrons to other atoms
organic compound
atomic number
product
ionic bond
22. Substance made of two or more elements & none of which is carbon
inorganic compound
organic compound
covalent bond
double bond
23. Atoms that have lost or gained electrons
radioactive isotope
ion
ionic bond
compound
24. Identifies a specific element; equals the number of protons in an atom of each element
atomic number
inorganic compound
double bond
molecule
25. Occurs when atoms transfer electrons to other atoms
proton
inorganic compound
compound
ionic bond
26. The starting materials for a reaction; found on left side of chemical equation
reactant
matter
molecule
chemical formula
27. Shows the number and types of atoms in a molecule and how they are arranged
covalent bond
structural formula
reactant
organic compound
28. A pure substance that cannot be broken down into other substances by chemical reactions
nucleus
atomic number
chemical reaction
element
29. Occurs when atoms share electrons
covalent bond
ion
molecule
double bond
30. A covalent bond in which four valence electrons are shared between two atoms
neutron
double bond
ionic bond
proton
31. Substance containing two or more elements chemically combined in a fixed ratio
compound
atom
covalent bond
atom
32. Occurs when atoms share electrons
matter
product
covalent bond
organic compound
33. Atoms that are held together by covalent bonds
chemical formula
electron
molecule
covalent bond
34. Substance containing two or more elements chemically combined in a fixed ratio
ionic bond
nucleus
compound
proton
35. Ending materials of a reaction; found on right side of chemical equation
molecule
atomic number
atomic number
product
36. Shows the number and types of atoms in a molecule and how they are arranged
structural formula
chemical formula
electron
nucleus
37. Subatomic particle having a negative charge; not in nucleus but surrounds it
electron
structural formula
covalent bond
chemical reaction
38. A covalent bond in which four valence electrons are shared between two atoms
proton
matter
chemical formula
double bond
39. The smallest particle of an element that retains the properties of the element
atomic number
reactant
valence electrons
atom
40. Indicates the formation of new substances from previous substances
single bond
chemical reaction
chemical formula
structural formula
41. Substance made of two or more elements & one being carbon
inorganic compound
compound
ion
organic compound
42. The starting materials for a reaction; found on left side of chemical equation
element
reactant
ion
valence electrons
43. Substance made of two or more elements & one being carbon
chemical formula
organic compound
ionic bond
structural formula
44. Interaction of substances that lead to the formation of new substances
covalent bond
chemical reaction
atom
double bond
45. A pure substance that cannot be broken down into other substances by chemical reactions
chemical formula
radioactive isotope
matter
element
46. Electrons in the outermost energy level; they are involved in bond formation
double bond
chemical reaction
valence electrons
element
47. Indicates the number and types of atoms in a molecule
radioactive isotope
chemical formula
inorganic compound
structural formula
48. Electrons in the outermost energy level; they are involved in bond formation
structural formula
valence electrons
compound
compound
49. An unstable atom in which the nucleus decays (breaks down) releasing particles and energy
covalent bond
chemical reaction
valence electrons
radioactive isotope
50. Atoms having the same numbers of protons but different numbers of neutrons
inorganic compound
ionic bond
isotope
chemical formula