Periodic Table Review 8th Grade

Question 1

The basic building block of matter that cannot be broken into simpler substances is a/an:

Accepted Answer

Element

Question 2

What is the first element in the periodic table?

Accepted Answer

Hydrogen (H)

Question 3

How many of elements in the periodic table appear in nature?

Accepted Answer

92

Question 4

What is the name of the compound NaCl?

Accepted Answer

Sodium chloride

Question 5

Which of these is a noble gas?

Accepted Answer

Neon (Ne)

Question 6

An element's mass number is ______________________.

Accepted Answer

The atom's neutrons plus protons

Question 7

Which is a sign that a chemical reaction has occurred?

Accepted Answer

formation of a solid, gas forms, change in temperature, change in color

Question 8

What happens when the atoms of a substance are regrouped?

Accepted Answer

a new substance is formed

Question 9

The rows of the periodic table are called:

Accepted Answer

periods

Question 10

Which of these is NOT a gas found in the Earth's atmosphere?

Accepted Answer

Sulfur (S)

Question 11

Elements that are good conductors of heat and electricity belong to the _________family.

Accepted Answer

Metals

Question 12

Which of these are not families of elements?

Accepted Answer

all are families

Question 13

The columns of the periodic table are called:

Accepted Answer

Groups

Question 14

Two or more atoms bonded together is a:

Accepted Answer

molecule

Question 15

The smallest particle of an element is a(n):

Accepted Answer

atom

Question 16

The atomic mass of elements ________as you move to the right and down the table.

Accepted Answer

Increases

Question 17

Elements in the Periodic Table are arranged by:

Accepted Answer

Atomic Number

Question 18

How many electrons in an Oxygen (O) atom?

Accepted Answer

Six

Question 19

A form of matter that is different from every other form of matter is called a:

Accepted Answer

substance

Question 20

What element acts like it belongs to two groups?

Accepted Answer

Hydrogen

Question 21

What elements are in sodium chloride (NaCl)?

Accepted Answer

Sodium & Chlorine

Question 22

Which scientist came up with the concept of the periodic table?

Accepted Answer

Dmitri Mendeleev

Question 23

Where will you find noble gases on the periodic table?

Accepted Answer

Far Right

Question 24

Which of these is not a sign that a chemical reaction has occurred?

Accepted Answer

a solid dissolving in water

Question 25

An element's atomic number refers to the number of ___________ it has.

Accepted Answer

Protons

Question 26

The sub-atomic particle that has a negative charge is the:

Accepted Answer

Electron

Periodic Table Review 8th Grade

Questions 26

Periodic Table Review 8th Grade

Questions 26