PS CIA 1 Review

Front

What is the identity of this atom?

Back

Carbon

Front

The dark particles in the middle are called

Back

Neutrons

Front

An atom with a charge?

Back

An ion

Front

An element has 17 protons, 17 electrons and 21 neutrons is what element?

Back

Chlorine

Front

How many neutrons does U-238 has, it is atomic number is 92?

Back

146

Front

What is an atom called that has gained or lost electrons?

Back

Ion

Front

An ion has 11 protons and 10 electrons. Which of the following is TRUE about this ion?

 

A) It has lost an electron and become negatively charged.

B) It has lost an electron and become positively charged.

C) It has gained an electron and become negatively charged

D) It has gained an electron and become positively charged.

Back

B) It has lost an electron and become positively charged.

Front

How many valence electrons do Alkaline Earth Metals have?

Back

2 valence electrons

Front

Element X is a solid at room temperature and a good conductor of heat and electricity. Which of the following BEST categorizes Element X?

Back

Metal

Front

he image shows the periodic table square for the element sodium. How many neutrons does an average atom of sodium have?

Back

12