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