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