Chemistry
Chemistry
8th grade chemistry review
8th grade chemistry review
Oxygen has two electron rings but Hydrogen only has one. Why?
Elements in the farthest left family are what?
In the experiment above, the mass of the reactants was 110g and the mass of the product was 100 g. What is the likely reason for the unbalance?
How many atoms of hydrogen are in the reactants?
Which best describes the point of the stair step line on the periodic table?
An isotope is an element with a different number of neutrons than found in a stable (typical) version.
The modern periodic table is organized in what way?
The most reactive elements are found where on the periodic table?
Hydrogen can only form one bond, why?
The majority of elements on the periodic table are what?
In a balanced equation the law of conservation of mass states what?
Noble Gases have how many electrons in their outer most valence shell?
Bronze is an alloy of copper and tin. An alloy is a what?
Which is an example of a physical and chemical change?
This image can be categorized as what
The atomic number is the number of what?
The atomic mass of calcium is 40.078. Why is not a whole number?
What would be a good process to retrieve this dissolved solid?
The least reactive elements are found in what family?
What element is most reactive?
The statue of liberty is made of copper. Why is it green?
Which of these is not made up of two or more substances combined physically?
The image here depicts what kind of mixture?
The atomic number for Oxygen is what?
Which two elements would be most similar?
How is the second beaker different from the first.
Which of these statements is not true about molecules?
The majority of elements are in what family?
All elements are solids at STP?
How many valence electrons does oxygen when not bound to water?