1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Bingel [31]
3 years ago
12

You happen to be visiting Northern California and you are driving by Suisun Bay, a notorious graveyard for old ships. You notice

that all of these ships appear tobe rusting away. Which of the following statements is true?A chemical change is the result of a chemical reaction. A physical change just changes the state of the substance.A chemical change is the result of a chemical reaction. A physical change just changes the state of the substance.Changes in matterThe rusting of the metal is neither a chemical change nor a physical change.The rusting of the metal is a chemical change.The rusting of the metal is both a chemical change and a physical change.The rusting of the metal is a physical change.Black ice is neither a chemical change nor a physical change.Black ice is an example of a chemical change.Black ice is both a chemical change and a physical change.Black ice is an example of a physical change.
Chemistry
1 answer:
eduard3 years ago
4 0

Answer:

1) rusting of metal is both chemical and physical change

2) black ice is an example of a physical change

Explanation:

when metal rusts, it is due to a reaction between the atoms in the metal and the atoms in the air(oxygen) or water(oxygen). When it rusts it also physically changes the look of the metal from silver to dirty brownish maroon.

Black ice is a change in state hence it cannot be a chemical change as the original substance NO LONGER EXISTS in a chemical reaction. It is a physical change however as the ice is changing into a different state of matter.

HOPE THIS HELPS!!!

You might be interested in
Which product has a bitter taste, is slippery when mixed with water, and can damage skin and eyes?
beks73 [17]

Answer:

sodium hydroxide

Explanation:

its a base and it can damage skin

7 0
3 years ago
Read 2 more answers
At what temperature will a solid melt ?
r-ruslan [8.4K]

A solid will start to melt when it reaches its melting point. For example the melting point of Helium is -272° Celsius and the melting point of Carbon is 3500° Celsius . Helium has the lowest melting point and carbon has the highest melting point in the periodic table.

4 0
3 years ago
Read 2 more answers
Answer question 4 please and 5
seropon [69]
Its me and me= me.serdtghmjhgfdsaazSDFGHYYUJYHGFDSXAZSDFGHYUJIKUJYHGTFDSXAZSXDCFGHJIKUJHGGFVCDXZVFGHYU7GBFVC  CVFGTY67YTGFVC VFGTY56YTGBV VBG
5 0
3 years ago
What is the Ksp expression for the dissociation of calcium oxalate?Immersive Reader
skelet666 [1.2K]

Answer:

Ksp = [Ca⁺²] × [C₂O₄⁻²]

Explanation:

Step 1: Write the balanced reaction for the dissociation of calcium oxalate

CaC₂O₄(s) ⇄ Ca⁺²(aq) + C₂O₄⁻²(aq)

Step 2: Write the expression for the solubility product constant (Ksp) of calcium oxalate

The solubility product constant is the equilibrium constant for the dissociation reaction, that is, it is equal to the product of the concentrations of the products raised to their stoichiometric coefficients divided by the product of the concentrations of the reactants raised to their stoichiometric coefficients. It doesn't include solids nor pure liquids because their activities are 1.

Ksp = [Ca⁺²] × [C₂O₄⁻²]

3 0
3 years ago
Citric acid is a naturally occurring compound. what orbitals are used to form each indicated bond? be sure to answer all parts.2
Rina8888 [55]

Answer : The orbitals that are used to form each indicated bond in citric acid is given below as per the attachment.

Answer 1) σ Bond a : C has SP^{2}  O has SP^{2} .

Explanation : The orbitals of oxygen and carbon which are involved in SP^{2} hybridization to form sigma bonds. This is observed at 'a' position in the citric acid molecule.

Answer 2) π Bond a: C has π orbitals and  O also has π  orbitals.

Explanation : The pi-bond at the 'a'position has carbon and oxygen atoms which undergoes pi-bond formation. And has pi orbitals of oxygen and carbon involved in the bonding process.

Answer 3) Bond b:  O SP^{3}  H has only S orbital involved in bonding.

Explanation : The bonding at 'b' position involves oxygen SP^{3} hydrogen atoms in it. It has SP^{3} hybridized orbitals and S orbital of hydrogen involved in the bonding.

Answer 4) Bond c:   C is SP^{3}  O is also SP^{3}

Explanation : The bonding involved at 'c' position has carbon and oxygen atoms involved in it. Both the atoms involves the orbitals of SP^{3} hybridized bonds.

Answer 5) Bond d:   C atom has SP^{3}  C atom has SP^{3}

Explanation : At the position of 'd' the bonding between two carbon atoms is found to be SP^{3}. Therefore, the orbitals that undergo SP^{3} hybridization are SP^{3}.

Answer 6) Bond e : C1 containing O SP^{2}    

C2 is SP^{3}

Explanation : The carbon atom which contains oxygen along with a double bond has SP^{2} hybridized orbitals involved in the bonding process; whereas the carbon at C2 has SP^{3} hybridized orbitals involved during the bonding. This is for the 'e' position.

7 0
3 years ago
Other questions:
  • Write the quantities 3 x 10^-4 cm and 3 x 10^4 km in ordinary notation
    6·1 answer
  • A mixture of hept-1-yne, hept-2-yne, and hept-3-yne was hydrogenated in the presence of a platinum catalyst until hydrogen uptak
    8·1 answer
  • Multicellular organisms are organized into tissues, organs, and organ systems.TRUE OR FALSE​
    5·2 answers
  • If a 28.0 L balloon with a temperature of
    15·1 answer
  • How much energy is required to bring a 30 gram crayon from room temperature, 25 degrees C, to its melting point 49 degrees C?
    10·1 answer
  • Explain why pentane has a higher boiling point than butane
    13·1 answer
  • Why is methanol written as ch3oh instead of ch4o?​
    5·1 answer
  • The group that does not receive a treatment during an experiment is called the?
    12·1 answer
  • NEED HELP FAST !! Does anyone know what element this is ??
    14·1 answer
  • Which of the following is an inner transition element?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!