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nordsb [41]
3 years ago
11

4. Which of the following is NOT a common property of bases? A. Feels slippery B. tastes bitter C. Reacts with metal D. Changes

colors of indicators
Chemistry
2 answers:
miv72 [106K]3 years ago
4 0

Answer:

C. Reacts with metal

Explanation:

A base is a substance that releases hydroxide ions +OH in water

the following option are true of base:

B. it have a bitter taste e.g milk of magnesia is a base, mustard and soap

A. base have a slippery or soapy feel

D. base changes colour of indicator; red litmus paper is used to test for base. its changes red litmus paper blues in the presence of hydroxide ion.

Option C is not a common properties of base

base are formed when the oxide of some metals dissolve in water.

base react with acid to form salts and water.

alisha [4.7K]3 years ago
3 0

Reacting with metals is not a common property of bases. Bases do however react with acids. 

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Why is it so important to use more than just fossil fuels for our energy sources?​
blsea [12.9K]

Answer:

Fossil Fuels have the ability to pollute and trash our ecosystems. Its better for us to use clean and renewable energy too.

Explanation:

8 0
3 years ago
Teniendo en cuenta los siguientes fenómenos: ebullición del agua- movimiento de un cuerpo- disolución de sal en agua- combustión
miv72 [106K]

Answer:

Las siguientes son reacciones químicas;

combustión de leña

oxidación del hierro

descomposición del agua en hidrógeno y oxígeno

Explanation:

Una reacción química da como resultado la formación de una (s) sustancia (s) nueva (s), mientras que un cambio físico no conduce a la formación de una sustancia nueva.

Las siguientes son reacciones químicas;

combustión de leña: la combustión de madera implica la oxidación del carbono según la reacción; C (s) + O2 (g) -------> CO2 (g)

oxidación del hierro: La oxidación del hierro conduce a la formación de óxidos de hierro. Como; 2Fe (s) + O2 (g) ----> 2FeO (s)

descomposición del agua en hidrógeno y oxígeno: esta es una reacción química en la que el agua se descompone de la siguiente manera; 2H2O (l) -----> 2H2 (g) + O2 (g)

Todos estos procesos enumerados anteriormente conducen a la formación de nuevas sustancias, por lo tanto, son reacciones químicas.

3 0
3 years ago
A protein is a polymer that is made of a. simple sugars. c. amino acids. b. nitrogen and carbon dioxide. d. DNA.
MA_775_DIABLO [31]
Hello Lilsavage717, I believe the answer you are looking for is C. or Amino Acids. They are mainly located in living things like plants or bugs. 
7 0
3 years ago
Read 2 more answers
Calculate the entropy change for the reaction: Fe2O3(s) +3C(s) -> 2Fe(s) + 3CO(g)Entropy data:Fe2O3(s): 90 J/K molC(s): 5.7 J
Annette [7]

Explanation:

We are given: entropy of Fe2O3 = 90J/K.mol

: entropy of C = 5.7J/K.mol

: entropy of Fe = 27.2J/K.mol

: entropy of CO = 198J/K.mol

\begin{gathered} \Delta S\text{ = S}_{products}-S_{reactants} \\  \\ \text{       = \lparen3}\times198+2\times27.2)-(3\times5.7+90) \\  \\ \text{       = 541.3J/K.mol} \end{gathered}

Answer:

The correct answer is C.

5 0
1 year ago
Question 3
meriva

Answer:

We are dependent on plants and plants need CO2 from enviromen

Explanation:

8 0
3 years ago
Read 2 more answers
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