Which of the following substances can be classified as a salt?A.
Sodium Chloride (NaCl)
Vinegar (CH3COOH)
Baking Soda (NaHCO3)
Bleach (NaClO)


Answer 1

Sodium Chloride (NaCl) can be classified as a salt


Sodium chloride is an "ionic compound" is known as salt. The ratio in which the  sodium(Na) and chloride(Cl) present in sodium chloride in  NaCl is  1:1. It is found in seawater and is accountable for the salinity of the seawater. Also, NaCl is the extracellular fluid for various multicellular organisms.  

When refined, it becomes in its 'edible' form and is used in food preservatives. Whereas, the large quantity of sodium chloride is used in various industries.  

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d egde 2021


Veronica’s velocity was measured as 4.3 m/s. She displaced 20 meters in 4.7 seconds. Which piece of information is missing for the correct calculation of velocity?A) the direction
B) the end point



The direction is missing here.


It is given that,

Veronica's velocity, v = 4.3 m/s

Distance, d = 20 m

Time taken, t = 4.7 s

The velocity of an object is defined as the net displacement divided by total time taken.

We need to find the missing information. We know that velocity is a vector quantity i.e. it has both magnitude and direction. Here, only magnitude of velocity is given but the direction is missing. So, the correct option is (a) " the direction".

B) The end point

The direction is not really important.

Which molecule does not have a linear molecular shape?


The molecule that doesn't have a linear molecular shape is 03.i.e.Ozone.

What causes matter to exist in three different states​



Thermal Energy..?

When I think of three states of matter I think of water as an example:

• Adding extreme heat to the liquid form of water can turn it into gas.

• Adding heat to ice can turn it into the liquid form of water.

• Freezing the liquid form of water can turn it into ice.

I would say temperature (thermal energy) has an effect of the different states of matter.