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