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