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