Question | Answer |
4 states of matter | solids, liquids, gases, plasma |
Solids have what kind of structure | definite |
In solids, atoms are unable to move how? | freely |
Gas particles spread out as _______ as possible. | far |
Do liquids have a higher amount of energy than solids? | yes |
What are examples of the three states of water | liquid - gas solid - ice gas - vapor |
What rises as energy is added to water | temperature |
Plasma makes up most of what? | Solar System |
What does plasma carry? | electric currents |
Which state of matter has the most energy? | plasma |
Who invented the first temperature scale? | Daniel Fahrenheit |
On the Fahrenheit scale, water boils at what temperature? | 212 degrees |
On the Fahrenheit scale, water freezes at what temperature? | 32 degrees |
On the Celcius scale, water boils at what temperature? | 100 degrees |
On the Celcius scale, water freezes at what temperature? | 0 degrees |
Water molecules are both ___________ and ___________? | positive and negative |
Water is also known as what? | universal solvent |
What happens to water when it freezes? | expands |
Most matter will do one of two things when it freezes | expand or contract |
If a substance has a large concentration of hydrogen ions it is a what? | acid |
What is the PH range for acids? | below 7 |
What is the neutral point of the PH scale? | 7 |
What is the PH range for bases? | above 7 |
What is an example of very strong acids? | battery acid |
What is an example of a weak acid? | milk |
What prevents pH from changing much, if at all? | buffers |
What is an example of a buffer? | saliva |
What is an example of a strong base? | drain cleaners |
What is an example of a weak base? | baking soda |
What are two types of heat engines? | internal and external combustion engines |
In external combustion engines, fuel is burned where? | outside the cylinder |
In internal combustion engine, fuel is burned where? | inside the cylinder |
What is an example of an external combustion engine? | steam engine |
What is an example of an internal combustion engine | diesel or gas engines |
Which state of matter has more energy than the gas state? | plasma |
What is unique about an absolute scale? | it has no negative values |
when fluids flow slowly, they are said to have what type of viscosity? | high viscosity |
The concentration of which atom determines pH on the pH scale? | hydrogen atom |