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