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