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