Chemistry (Check)

Classify each of these statements as always true, sometimes true, or never true.

__ST___13.In an equation, a substance is shown to be in the gaseous state by placing an upward-pointing arrow after its formula.

___ST___14. Atoms are destroyed in a chemical reaction.

___AT____15. A skeleton equation is not a balanced equation.

13. An upward arrow is used to designate a gas; (g) may also be sued. I think the statement is AT
14.Atoms are not destroyed except in radioactive decay and then they are changed to some other atom.
15. I think this one is correct if we agree on the definition of a skeleton equation.

  1. 👍 0
  2. 👎 0
  3. 👁 334
asked by Dennis
  1. St
    St
    St

    1. 👍 0
    2. 👎 0
  2. What is a balanced equation when aluminum reacts with aqueous hydrochloric acid to form hydrogen gas and aqueous aluminum chloride

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry (Check)

    Classify each of these statements as always true, sometimes true, or never true 11)sometimes true 12)Never True 11)Scientific notation is used to express large numbers in convenlent form. 12)Siginificant figures include all the

    asked by Bryan on January 13, 2007
  2. Chemistry check

    Can someone make sure I have the right answer. The question is: Classify the statement as always true, sometimes true, or never true. A net ionic equation shows all ions present. I say never true because it only shos soluble

    asked by Mike on March 17, 2009
  3. math

    △GHJ∼△MNP Which statements are true? Select each correct answer. m∠J=m∠P (TRUE) ∠H≅∠N (TRUE) HJ¯≅NP¯ (it has the line over them) false GH=MN (TRUE) GJ/MP=GH/MN ( TRUE )

    asked by am i correct ? on December 4, 2017
  4. Math

    a.)If ABCD is a parallelogram, then ABCD is (always true, sometimes true, OR never true) a rectangle. b.)The diagonals of a square (always true, sometimes true, OR never true) bisect each other. c.)If WXYZ is a rectangle, then the

    asked by Kim on April 29, 2011
  5. chemistry

    Which of the following statements is NOT true in regards to water, ethanol, and isopropanol? A. Water has the highest boiling point. B. H-O-H and C-O-H bond angles are all equal to 1095. C. Dispersion forces affect all three

    asked by helppleez on January 26, 2007
  6. Chemistry: Answer check please!

    1. Reactions follow the law of conservation of mass. a.) True b.) False Answer: True 2. Reactants are the materials used in a chemical reaction. a.) True b.) False Answer: True 3. In a chemical equation, the mass on the left of

    asked by Cheryl on April 2, 2011
  7. Physical Ed

    11. Disagreements are a normal part of life. (1 point) True False 12. Talking to a trustworthy adult is the best way to stop sexual abuse and get help. (1 point) True False 13. Some conflicts are made worse by peer negotiation. (1

    asked by Someone on February 6, 2013
  8. Chemistry (Check)

    Classify each of these statements as always true, sometimes true or never true. __NT___11. The SI base unit of mass is the milliliter. __AT___12. A decigram is 100 times smaller than a gram. ___ST__13. The SI unit of volume is

    asked by Bryan on January 18, 2007
  9. geometry

    Is it always true, sometimes true, or never true that the centroid is outside its associated triangle? Is it always true, sometimes true, or never true that two complementary angles have a common vertex?

    asked by lisa on May 30, 2010
  10. chemistry

    In the chemical plating experiment zinc powder is dissolved in a hot NaOH solution to form sodium zincate according to the following reacton: Zn(s) + 2NaOH(aq) Na2ZnO2(aq) + H2(g) Answer true or false for each of the following

    asked by chem help on May 2, 2010

More Similar Questions