Chemistry Game!

Question 1

what are valence electrons?

Accepted Answer

the ones in the highest occupied energy level

Question 2

Elements are different because they contain different numbers of _____

Accepted Answer

Protons

Question 3

What is the name of the Group I metals?

Accepted Answer

Alkali mentals

Question 4

Isotopes have different mass numbers because they have different numbers of____

Accepted Answer

neutrons

Question 5

How many valence electrons do the Noble Gasses have?

Accepted Answer

8

Question 6

Nonmetals are located...

Accepted Answer

on the right side

Question 7

1How is the periodic table categorized?

Accepted Answer

Atomic number

Question 8

Who created the periodic table as we know it today?

Accepted Answer

Dimitri Mendeleev

Question 9

Neutrons have _____charge and have a mass nearly equal to that of a ____

Accepted Answer

No Charge, proton

Question 10

What Is an atom?

Accepted Answer

The smallest particle of an element

Question 11

What does all Halogen have in common ?

Accepted Answer

Diatomic

Question 12

Which of these is a metalloid?

Accepted Answer

silicon

Question 13

How many groups are there on the periodic table?

Accepted Answer

18

Question 14

What is an atoms mass number?

Accepted Answer

Total number of protons and neutrons

Question 15

How many periods are there on the periodic table?

Accepted Answer

7

Question 16

The most reactive of the nonmetals are the

Accepted Answer

halogens

Question 17

Which of the following is true ?

Accepted Answer

The oxide of the elements become acidic across period

Question 18

Together, electrons, protons and neutrons are known as ______

Accepted Answer

Subatomic Particles

Question 19

Most of the mass of an atom is located where?

Accepted Answer

nucleus

Question 20

A Proton is _____charged and is about ____time larger than an electron.

Accepted Answer

Positively, 1840x

Question 21

Unstable arrangements tend to become more stable by __________?

Accepted Answer

losing energy

Question 22

After electrons have moved to higher energy level they then lose energy by...

Accepted Answer

emitting light

Question 23

Metalloids are located...

Accepted Answer

along the "staircase"

Question 24

What is a period?

Accepted Answer

Horizontal row of the periodic table

Question 25

What is a group?

Accepted Answer

a vertical row of the periodic table

Chemistry Game!

Questions 25

Chemistry Game!

Questions 25