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