Slighty harder questions
Why is salt being dissolved in water a physical change?
Heating the water can bring back the salt, making it reversible.
What numbers do the pH scale range from?
0-14
Which way does Ionization energy increase?
Up, right
What change creates a new substance?
Chemical Change
What are the four states of matter?
Solid, Liquid, Gas, Plasma
What type of change can happen in both a physical and chemical change?
Change of color
If a solution has more H3O+ ions then OH- ions, it is a was?
An Acid
Which way does atmoic energy increase on the periodic table?
Down, left
Water boiling is an example of what kind of change?
Physical
How are the molecules arranged in a solid?
They are bunched together and they vibrate against each other on a small level.
Why are gases the easiest to compress?
Because of the space between it’s molecules
What makes water a neutral?
Equal amount of H30+ and OH- ions
Out of all the periodic trends which one is the lowest in the noble gases?
Electronegativity
Which type is change is it almost always impossible to revert?
Chemical change
Plasma
Between sodium and chlorine, which one has more ionization energy?
Chlorine
What does 1 jump up the pH scale mean in acidity?
10 times more acidic
What 2 other trends increase the same way as Nuclear attraction?
Electronegativity and Ionization Energy
If a substance changes shape, what type of change is happening?
Physical Change
What do the molecules of a liquid do that cause it to take the shape of its container?
They slide pass one another.
How much more acidic is the ph of 1 compared to the ph of 14
100,000,000,000,000, or 100 trillion
How much more acidic is a ph of 1 to a ph of 4
10,000, or 10 thousand
Which way does Metallic Character increases?
Down, left.
Dissolving sugar in water is an example of what kind of change?
Physical Change
What state of matter is easiest to compress?
Gas