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