Vocabulary
This type of change DOES NOT change the actual substance itself...
physical change
The types of properties that depend on the AMOUNT of a substance the object contains. ...Mass and volume are examples...
Extensive Properties
The type of change that occurs when a substance is heated or cooled...
Physical Change
Another name for a chemical change is a chemical _________.
Reaction
Is matter created or destroyed? (yes or no)
no
A type of change when one or several pure substances turn into different pure substances...
Chemical Change
The properties that DO NOT depend on the amount of a substance is ______. Example is density and color
Intensive Properties
Can chemical changes be seen directly with the eye?
No
In this equation, which are the reactants?
Na + Cl ----> NaCl
Na and Cl
The mass of the substances before a physical or chemical change is always ______ to the mass of the substances after the change.
equal
The substances that result from a change or a chemical reaction...
Products
How a material behaves when a force is applied to it...
Mechanical
In a chemical change, the properties of the pure substance will be (the same/different) after the reaction.
Different
What type of reaction is this...(synthesis, decomposition, substitution)
Na + Cl = NaCl
Synthesis
12mL of water was in a graduated cylinder. A nail was placed in the graduated cylinder, and the water rose to 31mL. What is the volume of the nail?
19cm3
The original substances that undergo a change or a chemical reaction...
Reactant
Characteristics that describe a certain object are:
(There are 3)
volume, mass, and shape
When a new substance is produced, this is a _____ change.
Chemical
Which type of reaction is this?
(synthesis, decomposition, substitution)
CH4 + Cl2 ---> CH3Cl + HCl
substitution
What is the term to properly smell an unknown chemical substance?
explain or "waft."
A chemical change that commonly involves a change in the color the original substance (think about a nail rusting)...
oxidation
The 5 Categories that Physical Properties are divided into:
Mechanical, Electrical, Magnetic, Thermal, Optical
List 3 ways you can detect if a new substance has formed...
color, smell, bubbles form
The mass of a compound was 23.3g before the reaction. After the reaction, the mass was 19g. Did this experiment go correctly? Explain why the a change in mass.
various
The mass of the apple was 32.2g. The volume of the apple was 14cm3. What is the density of the apple?
2.3 g/cm3