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