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