definitions
What is the physical property of matter?
Characteristics that can be observed or measured.
Is conductivity a chemical or physical property?
Physical Property
What happens when alka seltzer is dropped in water?
Bubbles begin to form.
Alfred measures the temperatures at which three liquids change into gases. What property is Alfred comparing?
physical
Is conductivity a chemical property?
No, heat and electrical conductivity are physical properties.
when one substance dissolves in another
.__________ do (does) not change based on how much matter is present.
a. Volume b. Melting point and boiling point c. Weight d. Mass
Melting and boiling point
Which of the following is not a chemical change characteristic?
a) Change in colour
b) Change in state
c) Production of sound
d) Change in smell
B) change in state
How do you know If melting point is a physical property?
If it can be frozen back to it´s original form.
Is melting point a chemical property?
It is a physical property because it does not change into a new substance.
What does melting point mean?
Melting point is when a solid turns into a liquid.
Melissa adds 10 g of baking soda to 100 g of vinegar. The mixture begins to bubble. When the bubbling stops, Melissa finds the mass of the resulting mixture. She determines its mass is 105 g. Why has the mass changed?
A gas has formed and left the mixture
Which of the following does not represent a chemical change?
a) Burning of leaves
b) Fermentation of grapes
c) Turning brown of freshly cut banana
d) Freezing of water
D) freezing water
Can something be considered a physical property if it has turned into a new substance?
No because something considered as a physical property can not turn into a new substance.
A chemical change __________.
a. cannot be reversed easily
b. never will change state
c. always can be reversed
a. Cannot be reversed easily
What is matter?
Anything that has mass and takes up space.
. In the laboratory, Kristy has a mixture of water and rubbing alcohol. Kristy separates the water and alcohol by heating the mixture until the alcohol boils away. What happens as Kristy separates the mixture?
A. Increase volume
B. Increased mass
C. Chemical change
D. Physical Change
D. physical change
T or F: Bubbles are a sign of Chemical Change
TRUE
Is density a physical property?
Yes, it is the mass of a substance.
Which types of changes observe the law of conservation of mass?
A. only changes of state
B. only physical changes
C. only chemical changes
D. physical changes and chemical changes
Physical and chemical changes
differentiate between physical and chemical change
physical change affects the size, shape or state of a substance, no new substance is form. while chemical change offers when a new substance is form with new properties
Baking a cookie
Chemical Change
. Which of these statements represents a physical change of matter?
A. A match is struck and flames.
B. A pot of water reaches the boiling point.
C. An old bike is left outside and rust forms.
D. Fireworks burst into a rainbow of color in the night sky.
B. a pot a water reaches the boiling point
Matthew takes a piece of ice with a mass of 100 g and places it on a metal sheet. The ice melts and then evaporates. What has happened to the 100 gram mass?
A. The ice now exists as a 100 g mass of water vapor.
B.The ice has evaporated, so the 100 g mass is destroyed.
C. The 100 g mass of ice combines with the mass of the metal sheet.
D. The ice has evaporated, producing water vapor with a mass of 10 g.
A. The ice now exists as a 100 g mass of water vapor.
During all changes, physical and chemical, mass is __________.
a. gained b. lost c. destroyed d. conserved
d. conserved