Science periodic table test

Question 1

Difference between periods and families

Answer 1

Period -
A row of elements whose properties change gradually and predictably (horizontal on table)

Families -
Elements that have similar physical or chemical properties; each member is apart of valence electrons table)

Question 2

Difference between atomic mass and atomic number

Answer 2

(sum of protons and neutrons in a atom)

(number of protons in the nucleus that makes the chemical bonds)

Question 3

What determines how active an element is

Answer 3

Elements on the left side of the table are highly reactive - less reactive metals are in the middle of the table - next comes the metalloids, followed by the nonmetals on the right.

Question 4

Why are the noble gasses “noble”

Answer 4

They are rarely reactive, and they have 8 electrons in their outer shell

Question 5

Difference between metals, metalloids, and nonmetals + what are the properties of each

Answer 5

Metal - an element that has lister, malleable, ductile and is a good conductor of heat or electricity; all metals are solids with high melting points except mercury

Metalloids - an element that shares some properties with metals and nonmetals

Nonmetals - an element that is usually a gas or brittle solid at room temperature and is a poor conductor of heat or electricity + includes elements that are essential for life, such as carbon, sulfur, nitrogen, oxygen, phosphorus, and iodine.

Question 6

Parts of the atoms and the charge of each and where they are found

Answer 6

Protons - positively charged

Neutrons - electrical charge

Electrons - negatively charged

You can find the proton and neutrons in the nucleus of an atom, and you find the electrons in the outer shell of an atom

Question 7

Difference between ionic and covalent bonds

Answer 7

Covalent bonds occur when 2 or more atoms share electrons
In ionic bonds, one atom donates electrons to another.