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