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