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