Crime Solving science
Forensic scientists us this method to help them analyze evidence and solve crimes?
Chromatography
Size, shape, color, and state of a substance are examples of ________ properties?
Physical
What’s the definition of chemical properties?
A property that can only be trying to cause a chemical change
What is chemical change?
Changes in the identities and chemical makeup of substances change and new substances from
What are physical properties?
A property that can be determined without chaninging the nature of the substance
Chromatography is also known as what?
Separation scientist
A physical change is generally _________?
Reversible
What’s an example of chemical property?
Flammability, toxicity, acidity
Name an example of chemical change?
Rusting, burning, corrosion
It can change__or__,but not its__?
State, shape, composition
For a bank robbery forensic scientist may use what process?
Thin-layer chromatography
During a physical change, a substance undergoes a change in its _________?
What change occurs hydrogen peroxide dental strips will make your teeth white?
Chemical property
All chemical reactions can be described as?
Chemical equations
An example of a physical property?
Color, state, texture, melting point, boiling point, mass, volume, density
To analyze bombs scientist may use what technique?
High-performacne liquid chromatography
Which of the following is not an example of physical change?
Rusting
What occurs when a marshmallow turns black after being toasted for to long?
Chemical
A chemical change is never?
Reversible
Can be observed with?
Senses
What term did caught “red handed” come from?
From the red dye caught on burglars hands or clothes after robbing a bank.
Which of the following is an example of physical change?
Cutting of wood
What occurs when you taste something sour?
Physical property
How many chemical changes were on our last lab?
5
__ have a unique set of chemical and physical properties?
Pure substances