What type of element is hydrogen?

Hydrogen (H), a colourless, odourless, tasteless, flammable gaseous substance that is the simplest member of the family of chemical elements.

Explanation:

Hydrogen is the chemical element with the symbol H and atomic number 1.

Explanation:

answer; (arch); good luck

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.