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