Answer: Iron is considered as a Group B element.
Explanation:
Mendeleev divided the periodic table into 8 groups, each divided into two sub-groups named as A and B. He arranged the elements according to their atomic masses.
Group A elements are considered as the elements which are present in s-block and p-block.
Group B elements are the transition elements. Transition elements are the elements that belong to d-block.
From the given elements:
Lithium (Group 1-A) and helium (Group VIII-A) are s-block elements.
Tellurium is a p-block (Group VI-A)element.
Uranium is a f-block element.
Iron is the d-block (Group VIII-B)element (transition element)
Hence, iron is considered as a Group B element.
primary consumers
tertiary consumers
decomposers
Answer is: 4) form an aqueous solution.
Physical property can be observed and measured without any changes in molecular composition. The same substance is present before and after the change. Making aqueous solution is physical change (solvatation).
Element reactions with acids, oxygen and chlorine are chemical change (chemical reaction combustion), because new substances are formed, the atoms are rearranged and the reaction is followed by an energy change (exothermic reaction because energy is released).
thorns
B.
small leaves
C.
large leaves
D.
brightly colored flowers
Answer:C.
large leaves
Explanation: I took the test
B. Concrete in a sidewalk
C. Air inside a balloon
D. Liquid in a drink