Chemistry A Post Quiz: 50 Points
10 Questions
| Total Attempts: 36
This quiz is worth 50 points. There are 10 questions. Each question is worth 5 pts. You can ONLY take this quiz twice.
Questions and Answers
- 1.A description of how close a measurement is to the true value of the quantity measured. (AZ HS Science S1:C2:PO3)
- A.
Accuracy
- B.
Liter
- C.
Kilogram
- D.
Energy
- 2.A possible explanation of an observation that can be tested by scientific investigations is a(an) ____________________________. (AZ HS Science S1:C2:PO2)
- A.
Inference
- B.
Explanation
- C.
Hypothesis
- D.
Science
- 3.When matter moves from a gas to a liquid it is called _____________________. (AZ HS Science S5:C1:PO1)
- A.
Sublimation
- B.
Condensation
- C.
Deposition
- D.
Density
- 4.A change in a substance that involves a change in the identity of the substance is _________________. (AZ HS Science S1:C5:PO2)
- A.
Chemical Change
- B.
Phase Change
- C.
Physical Property
- D.
Physical Change
- 5.Sodium is a/an: (AZ HS Science S5:C1:PO4)
- A.
Element
- B.
Compound
- C.
Homogeneous mixture
- D.
Heterogeneous mixture
- 6.Which of the following is not a fundamental particle in an atom? (AZ HS Science S5:C1:PO6)
- A.
Electron
- B.
Element
- C.
Neutron
- D.
Proton
- 7.What is a negatively charged particle in an atom called? (AZ HS Science S5:C1:PO6)
- A.
Proton
- B.
Positron
- C.
Electron
- D.
Neutron
- 8.An atom of an element contains eight electrons. What is the identity of this element? You can look on a periodic table to find out. (AZ HS Science S5:C1:PO3)
- A.
Flourine
- B.
Carbon
- C.
Oxygen
- D.
Nitrogen
- 9.What is the definition of chemical compound? (AZ HS Science S5:C1:PO4)
- A.
A subatomic particle
- B.
A combination of two protons and two electrons
- C.
A combination of two or more chemical elements
- D.
A mixture of two or more substances
- 10.(True or False) An ionic bond forms when one or more pairs of electrons are shared between two atoms of non-metal elements. (AZ HS Science S5:C1:PO4)
- A.
True
- B.
False
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Sample QuestionWhat is the name of this chemical? NH4+
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Sample QuestionAll matter consists of particles called________________.
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