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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. Substance made of two or more elements & one being carbon
element
neutron
organic compound
structural formula
2. Identifies a specific element; equals the number of protons in an atom of each element
inorganic compound
atomic number
chemical reaction
neutron
3. The starting materials for a reaction; found on left side of chemical equation
isotope
covalent bond
inorganic compound
reactant
4. Electrons in the outermost energy level; they are involved in bond formation
chemical reaction
valence electrons
reactant
single bond
5. Occurs when atoms share electrons
chemical formula
element
covalent bond
radioactive isotope
6. Shows the number and types of atoms in a molecule and how they are arranged
compound
isotope
single bond
structural formula
7. Substance containing two or more elements chemically combined in a fixed ratio
element
compound
inorganic compound
matter
8. A covalent bond in which one pair of electrons is shared
single bond
ionic bond
proton
neutron
9. Electrons in the outermost energy level; they are involved in bond formation
radioactive isotope
isotope
inorganic compound
valence electrons
10. Ending materials of a reaction; found on right side of chemical equation
product
radioactive isotope
atomic number
structural formula
11. Atoms having the same numbers of protons but different numbers of neutrons
valence electrons
isotope
single bond
chemical reaction
12. An unstable atom in which the nucleus decays (breaks down) releasing particles and energy
product
valence electrons
radioactive isotope
chemical formula
13. Occurs when atoms transfer electrons to other atoms
ion
ionic bond
covalent bond
compound
14. Anything that occupies space and has mass
matter
radioactive isotope
ionic bond
compound
15. Identifies a specific element; equals the number of protons in an atom of each element
chemical reaction
valence electrons
double bond
atomic number
16. Subatomic particle having a positive charge; found in nucleus
proton
matter
molecule
compound
17. The smallest particle of an element that retains the properties of the element
covalent bond
chemical reaction
atom
single bond
18. Indicates the number and types of atoms in a molecule
chemical formula
product
chemical reaction
reactant
19. Subatomic particle having a positive charge; found in nucleus
atomic number
proton
ion
chemical reaction
20. Occurs when atoms share electrons
covalent bond
radioactive isotope
molecule
element
21. Atoms that are held together by covalent bonds
molecule
ion
chemical formula
atomic number
22. Substance made of two or more elements & none of which is carbon
inorganic compound
radioactive isotope
electron
molecule
23. A covalent bond in which one pair of electrons is shared
reactant
inorganic compound
single bond
compound
24. Substance made of two or more elements & none of which is carbon
structural formula
molecule
matter
inorganic compound
25. Protons and neutrons together; make up the center of an atom
chemical formula
inorganic compound
nucleus
electron
26. Indicates the formation of new substances from previous substances
double bond
ion
ionic bond
chemical reaction
27. A covalent bond in which four valence electrons are shared between two atoms
chemical formula
structural formula
double bond
reactant
28. Subatomic particle having a negative charge; not in nucleus but surrounds it
structural formula
element
electron
molecule
29. Interaction of substances that lead to the formation of new substances
chemical reaction
nucleus
product
organic compound
30. A covalent bond in which four valence electrons are shared between two atoms
atom
chemical reaction
organic compound
double bond
31. The smallest particle of an element that retains the properties of the element
atom
covalent bond
element
chemical reaction
32. Substance containing two or more elements chemically combined in a fixed ratio
compound
element
organic compound
product
33. Shows the number and types of atoms in a molecule and how they are arranged
chemical formula
compound
covalent bond
structural formula
34. Occurs when atoms transfer electrons to other atoms
structural formula
atom
inorganic compound
ionic bond
35. Indicates the formation of new substances from previous substances
ionic bond
atomic number
atom
chemical reaction
36. Subatomic particle without a charge; found in nucleus
radioactive isotope
ion
neutron
element
37. Subatomic particle having a negative charge; not in nucleus but surrounds it
ionic bond
atom
electron
molecule
38. Substance made of two or more elements & one being carbon
chemical formula
organic compound
molecule
product
39. A pure substance that cannot be broken down into other substances by chemical reactions
nucleus
element
chemical reaction
ion
40. Ending materials of a reaction; found on right side of chemical equation
reactant
product
neutron
valence electrons
41. Atoms that have lost or gained electrons
compound
valence electrons
ion
compound
42. Atoms that have lost or gained electrons
inorganic compound
ion
ionic bond
atomic number
43. Interaction of substances that lead to the formation of new substances
neutron
ion
chemical reaction
proton
44. A pure substance that cannot be broken down into other substances by chemical reactions
element
molecule
reactant
matter
45. Atoms having the same numbers of protons but different numbers of neutrons
molecule
nucleus
structural formula
isotope
46. Indicates the number and types of atoms in a molecule
reactant
structural formula
chemical formula
ion
47. Anything that occupies space and has mass
electron
ion
matter
organic compound
48. Subatomic particle without a charge; found in nucleus
matter
inorganic compound
neutron
structural formula
49. An unstable atom in which the nucleus decays (breaks down) releasing particles and energy
product
single bond
radioactive isotope
element
50. Protons and neutrons together; make up the center of an atom
matter
matter
compound
nucleus