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