Which of the following is NOT a common property of bases?a. feels slippery
b. tastes bitter
c. reacts with metals
d. changes colors of indicators

Answers

Answer 1

Answer: Bases are a class of compounds composed mainly of metal oxides and metal hydroxides. Bases exhibit the following properties:
Slippery feeling because they react with oils on the skin's surface to form soap.
Bitter taste
Changes color of indicators

However, bases do not react with metals. Therefore, the answer is C.

Related Questions

Bromine, a liquid at room temperature, has a boiling point of 58°C and a melting point of –7.2°C. Bromine can be classified as acompound. impure substance. mixture. pure substance.
Knowledge of atomic structure has evolved over time. Thomson discovered that atoms contain electrons, Rutherford discovered that most of the mass of an atom is concentrated in its center, and Bohr discovered that electrons orbit the nucleus. Taken together, what do these discoveries demonstrate? A. the cumulative nature of science B. the quantitative nature of science C.the importance of thorough review of scientific papers D. the importance of not publishing science until it is final
The solid form of a substance is usually more dense than its liquid and gaseous forms. Similarly the liquid form is usually more dense than the gaseous form. Which of these breaks this general density rule?A. ice floating in a glass of waterB. vapor rising from a hot cup of teaC. cooled magma sinking in a lava flowD. a hot air balloon falling as the gas inside cools
From which of these atoms in the ground state can a valence electron beremoved using the least amount of energy?(1) nitrogen (3) oxygen(2) carbon (4) chlorine
The atomic mass of titanium is 47.88 atomic mass units. This atomic mass represents the - explain please!

A beaker contains 100 mL of NaOH solution at pH = 13. A technician carefully pours into the beaker 10 mL of HCl at pH = 1. Which of the following statements correctly describes the results of this mixing?a. The concentration of Na⁺ ion rises.
b. The concentration of Cl⁻ ion will be 0.1M.
c. The concentration of undissociated H₂O molecules remains unchanged.
d. The pH of the beaker's contents will be neutral.
e. The pH of the beaker's contents falls.

Answers

Answer: Option (e) is the correct answer.

Explanation:

Since, the beaker contains NaOH solution whose pH is 13. As pH of NaOH is greater than 7 so, it means that this solution is basic in nature.

Whereas pH of HCl solution is equal to 1. As its pH is less that 7 so, it is acidic in nature.

Hence, when we add 10 ml of HCl into 100 mL of NaOH then there will be a slight decrease in pH of the solution because an acid is being added into the NaOH solution.

Thus, we can conclude that the statement pH of the beaker's contents falls, correctly describes the results of this mixing.

Which sample has particles with the lowest average kinetic energy?(1) 1.0 g of I2 at 50.°C
(2) 2.0 g of I2 at 30.°C
(3) 7.0 g of I2 at 40.°C
(4) 9.0 g of I2 at 20.°C

Answers

The question asks average kinetic energy. So it is only related with the temperature. The higher temperature is, the higher kinetic energy is. So the answer is (4).

Answer : Option 4) 9.0 g of $I_(2)$ at 20°C

Explanation : Usually the average kinetic energy depends upon the state of the matter. Considering about the iodine at lower temperature the kinetic energy is found to be low. Whereas at higher temperature has higher kinetic energy value.

From the kinetic energy equation it can be easily related that K.E. is directly proportional to the temperature.

Refer the attached image for the relationship of temperature with kinetic energy.

Suppose that you measure a pen to be 10.5 cm long. Convert this to meters.

Answers

If the pen is 10.5cm long, it is 0.105 meters. This can be worked out by considering that there are 100cm's in 1 meter, so you need to divide 10.5 by 100. You then move the decimal place 2 places to the right (because of the two zeros), which leads you to your answer of 0.105.

A pen measuring 10.5 cm long is equivalent to 0.105 meters.

Further Explanation

Length

Length refers to a measurement of distance. It is the distance between two points.

S.I units

The S.I. units of lengths. However, length can be measured using other units such as millimeters, centimeters, kilometers, etc.

Metric system unit of measurement

It is a system of measurement that uses units such as gram, liter, and meter to measure mass, capacity and length respectively.
This system measures length based on meters, such that all the other units of lengths are based on an inter-conversion of units in meters.

Conversion of units measuring length

1 centimeter = 10 millimeters

1 meter = 100 centimeters

1 meter = 1000 millimeters

1 kilometer = 1000 meters

1 kilometer = 1000000 centimeters, and so forth.

Conversion of larger units to small units

To convert larger units of measurement to smaller units we multiply we multiply the number of larger units by the appropriate conversion factor.

Conversion of smaller units to larger units

When converting smaller units of measurements to larger units of measurements we divide the number of smaller units by the appropriate factor.
For example, to convert cm to m, we divide the number of cm by 100.

In the question;

The pen measures 10.5 cm

But, 1 meter = 100 centimeters

Thus;

10.5 cm will be equivalent to;

= 10.5 cm/100 cm

= 0.105 meters

Therefore, a pen measuring 10.5 cm in length is equivalent to 0.105 meters.

Keywords: Length, meters, centimeters, metric unit system

Learn more about:

Conversion of centimeters to length: brainly.com/question/1616139
Metric system of measurements: brainly.com/question/1616139
Units of measuring length: brainly.com/question/1616139

Level: Middle school

Subject: Mathematics

Topic: Metric system of measurements

Sub-topic: Units of measuring length

The Gulf Stream is an example of a(n) ____________ current.a.
surface
c.
deep
b.
Coriolis effect
d.
Antarctic

Answers

It's a surface current because it's driven by the winds near the equator.

Explanation:
The Gulf stream System is one of the world's most intensely studied current systems. The Gulf stream begins upstream of the promontory, wherever the Sunshine State Current ceases to follow the seabed. The position of the Stream because it leaves the coast changes throughout the year. within the fall, it shifts north, whereas within the winter and early spring it shifts south.

It's a surface current because it's driven by the winds near the equator.

:)

A substance has an empirical formula of CH2 and a molar mass of 56 grams per mole. The molecular formula for this compound is(1) CH2 (3) C4H8
(2) C4H6 (4) C8H4

Answers

(3) C4H8
C=12, H=1
CH2= 12+2=14
(CH2)n=56g/mol
14n=56
n=4
(CH2)4=C4H8

Answer:

3) C4H8

Explanation:

Castle learning

What did alchemists contribute to the development of chemistry?

Answers

The alchemists were the first chemists, but they were also mixing chemicals, they believed that magic would help with their experiments.but it didn't. but their experiments of the science of chemistry did.

Final answer:

Alchemy made contributions to the development of chemistry through advancements in manipulating matter, discovering the law of conservation of matter, and contributing to the understanding of atoms and the periodic table.

Explanation:

Alchemy made some contributions to the development of chemistry. Although it was not scientific by modern standards, alchemists made progress in manipulating matter and exploring the properties of substances. One example of an alchemist's contribution is the discovery of the law of conservation of matter by Antoine Lavoisier, often regarded as the father of modern chemistry. Lavoisier's work with gases also changed chemistry from a qualitative to a quantitative science and laid the groundwork for further study. Additionally, alchemists played a role in developing the concept of atoms and the periodic table, which are fundamental in chemistry.