CP Chemistry - Midterm Review

Soda is an example of a mixture.

My electron configuration is the following 1s²2s²2p⁶3s^2, which atom am I?

How many valence electrons does Bromine have?

Which atom is the largest?

What does the number represent in the following picture?

Which of the following atoms is the largest?

What type of change does NOT alter the chemical identity of a substance?

I have the following electron configuration: [Xe]6s²4f¹¹

I have similar properties to Strontium but my atomic mass is less than Boron, which atom am I?

I form a -3 charge, but I am in period 3, which atom am I?

Oxygen (O) is an example of which of the following?

I form a +1 charge and I have the largest atomic radius in my group, which atom am I?

How many protons does the element in the diagram have?

I have 4 valence electrons and I am in period 2, which atom am I?

How many neutrons does the following atom have?

What do atoms in Ionic compounds do with their valence electrons in order to form a bond?

What is the total number of valence electrons in PH₃?

Is CH₂ polar or nonpolar?

If I am gray in color, I conduct electricity, and I did not break into pieces when hit, what type of element and I?

Which of the following is an example of a physical change?

What shape does the following molecule have? SiH₄?

In a neutral atom, what does the number of electrons equal?

Which compound has a high melting point?

Pure Methane (CH₄) is an example of which of the following?

Dissolving something in water is an example of a chemical change.

Which element on the periodic table has 49 protons?

What is the number of protons in this atom?

How many neutrons are in the atom shown in the diagram?