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