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