Answer:
the water displaced will not help the student find the correct volume because you can not accurately calculate it. you have to get the water when it is settled then you place the wood in.
Explanation:
Answer:
A- Group 1/1A
Explanation:
In group 1A they are all highly reactive metals, which tarnish when exposed to air.
The answer is chemical change
That is exploding of potassium metal when placed in water is chemical change.
When potassium is dropped into a beaker full of water then potassium moves about rapidly and then ignites within seconds, that is the metal is gone and all activity ceases.
So it an example of chemical change.
The reaction of potassium with water is as follows:
2K + 2H₂O ---->2KOH + H₂
Answer:
The question was to be what is metal in modern periodic table?. Thank for understanding.
Now we come to business:
Metal in modern periodic table:is all the elements to the left of the line.
Explanation:
- if you look at the modern periodic table diagram you will see a stair-stepped line starting at Boron(B),atomic number 5,and going all the way down to Polonium(Po), atomic number 84.Except for Germanium(Ge)and Antimony(Sb),all the elements to the left of the line can be classified as metals.
The answer is c. decreases. The gas law has a rule of P1V1=P2V2. So when the pressure of this gas increases, the volume will decrease.