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vodka [1.7K]
3 years ago
12

The alkali metals are those in the leftmost column on the periodic table.

Chemistry
1 answer:
weeeeeb [17]3 years ago
8 0
<span>The answer is Gaseous metals</span>
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Ppredict the identity of the precipitate in the below reaction:<br><br> BaCl2(aq) + K2SO4(aq) →
Annette [7]

Answer:  The precipitate formed is BaSO_4

Explanation:

A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid or precipitated form are represented by (s) after their chemical formulas.  

A double displacement reaction in which one of the product is formed as a solid is called as precipitation reaction.  

The balanced chemical equation is:

K_2SO_4(aq)+BaCl_2(aq)\rightarrow BaSO_4(s)+2KCl(aq)

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3 years ago
Is color change a physical or chemical change?
bagirrra123 [75]
It's a chemical change because it's changing the object's property. 
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3 years ago
We can change a gas to liquid by the temperature and the pressure. NextReset
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We can change a gas to a liquid by INCREASING the temperature and DECREASING the pressure
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3 years ago
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Match the following items. Match the items in the left column to the items in the right column. 1. general or nonspecific observ
ivann1987 [24]
when column B is like the attached pic: (missing in your question)

so the matches will be like that:

1- Qualitative :

as Qualitative is a general or nonspecific observation, they also don't require

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being approximated only. It  describes qualities and uses opinion

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as a hypothesis is an educated guess quantitative, and it is a prediction stated

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as Quantitative is a measured observation, It's an information or data based

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5- Control :

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you compare your experimental results to. This is for comparing results, it

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 Scientifically acceptable general principles to explain phenomena. It the

general or abstract principles of the science. for example the  wave theory of

light.

7- Law :

as a law is a statement that explains what something does under the same

conditions. when we take about law in science, it is a general rule to explain

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be stated in words or expressed as a mathematical equations.

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3 years ago
Classify these compounds as acid, base, salt, or other.? 1. ch3oh 3. hno3 5. nabr
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<span> </span><span>1. Alcohol(other) 
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4 years ago
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