Protons, electrons, and neutrons.
Compounds
Physical and chemical changes
Surprise.
Periodic table
100
_______ is the number of protons and neutrons.
What is Atomic Mass.
100
In a neutral atom the number_____ is equal to the number of____
What is 1.) Protons 2.) electrons
100
The ability to dissolve in another substance is called______?
What is Solubility.
100
The resistance to flow is ______?
What is Vicosity.
100
What is an example of a non metal, and a metal on the periodic table?
non metal= oxygen metal= iron
200
How would you do a Lewis Dot Diagram for Nitrogen?
You would draw an "N" and do 7 electrons around the outer shell of the "N"
200
What is the maximum number of electrons in each cell?
1st shell=2 2nd shell=8 3rd shell=8 4th shell=2
200
What are the 5 cluies indicating a chemical change has occured?
1. Colour change 2. Heat or light is given off 3. Bubbles 4. Precipitate 5. Difficult to reverse
200
What does 'Combining Capacity' mean?
The number of bonds that can form.
200
What side are the metals, and non metals located on the periodic table?
Metals are located on the left side, non metals are located on the right.
300
Which atoms gain electrons, and which atoms loose electrons. Give an example of a metal, and non-metal.
Metals tend to loose electrons, and non metals tend to gain electrons. All atoms want 8 outter electrons. An example of a: non-metal = Oxygen metal= Magnesium
300
What are molecular compounds made of, and how are they formed?
Molecular compounds are made of non-metals. They are formed when electrons are shared between the non-metals.
300
What is the difference between a chemical change, and a physical change?
A physical change can be reversed for example water can turn to ice, and then turn back into water again. With a chemical change its is almost impossible to be reversed.
300
What is an example of a chemical reaction, that could occur in your daily activites?
In the morning, when youre cooking yourself an egg for breakfast the first thing you do it you crack the egg into the pan. You turn the stove on, and it forms from a liquid to a solid because of the heat the stove is producing.
300
What is ionic bonding?
It is what occurs when a metal transfers one or more electrons to a non metal in an effort to attain a stable octet (8) of electrons.
400
What is the law of conservation?
During a chemical reaction the total number of actions of the reactants equals the total number of atoms of the products.
400
Why is it said atoms want to look like a noble gas?
Atoms will gain or loose electrons, this is because they want a full outter shell. This makes them achieve a full outter energy level. The close an element is to a noble gas, the more reactive it is.
400
Define Chemical Reaction, and give 3 clues you can tell a chemical reaction has occured:
A chemical reaction is a change in matter that produces new substances with new properties. 1) colour change 2) heat or light is given off 3) bubbles or gas is formed.
400
What is a pure substance? Give 2 examples of them.
A pure substance is a substance that only contains one type of particle. Water ancd oxygen are both examples of that, something like juice, where you mix the crystals with water would be a homogenius mixture.
400
What are the three forms of chemical equations and the methods? Write an example of each.
The three forms of chemical equations are Word equations, skeleton equations, and Balanced chemical equations. Word equation: hydrogen->oxygen->water Skeleton equation:H2+O2->H2O Balanced chemical equation: 2H2+O2->2H2O
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