Physical v. Chemical (QUIZ 2) Flashcards
Based on the table, which of Mark’s observations would show that a burning candle is a physical reaction?
A) Black smoke is given off; hot gases are rising.
B) The wax starts to melt.
C) The flame glows red and orange.
D) Time passes one minute at a time.
B) The wax starts to melt.
Based on the table, which of Mark’s observations would show that a burning candle is a chemical reaction?
A) Black smoke is given off; hot gases are rising.
B) The wax starts to melt.
C) The flame glows red and orange.
D) Time passes one minute at a time.
A) Black smoke is given off; hot gases are rising.
Changes that produce new kinds of matter with different properties are:
A) Chemical
B) Physical
A) Chemical
A change that can be easily reversed is:
A) Chemical
B) Physical
B) Physical
When a new substance is created, the change is:
A) Chemical
B) Physical
A) Chemical
A process that is NOT easily reversed is:
A) Chemical
B) Physical
A) Chemical
Burning a match is an example of a:
A) Chemical change
B) Physical change
A) Chemical change
Milk that sours is an example of a:
A) Chemical change
B) Physical change
A) Chemical change
The cooking of food is an example of a:
A) Chemical change
B) Physical change
A) Chemical change
Boiling water is an example of a:
A) Chemical change
B) Physical change
B) Physical change
Silver melting is an example of a:
A) Chemical change
B) Physical change
B) Physical change
Cutting paper is an example of a:
A) Chemical change
B) Physical change
B) Physical change
Freezing water is an example of a:
A) Chemical change
B) Physical change
B) Physical change
Which answer includes all the following that are chemical changes and NOT physical changes?
- freezing of water
- rusting of iron
- dropping a piece of iron into hydrochloric acid (H2 is produced)
- burning a piece of wood
- emission of light by a kerosene oil lamp
(a) 3 and 4
(b) 2 and V5
(c) 1, 2, 3, 4, and 5
(d) 2, 3, and 4
(e) 2, 3, 4, and 5
(e) 2, 3, 4, and 5
Which response lists all of the following properties of sulfur that are physical properties and not other properties?
- It reacts with hydrogen when heated.
- It is a yellow solid at room temperature.
- It is soluble in carbon disulfide.
- Its density is 2.97 g/cubic centimeter
- It melts at 112°C.
(a) 2, 3, 4, 5
(b) 2, 4, and 5
(c) 1
(d) 2, 3, and 4
(e) 3, 4, and 5
(a) 2, 3, 4, 5
Which of the following does NOT represent a physical change?
A) Liquid water is frozen to make ice cubes.
B) Sweat evaporates from skin.
C) Sugar reacts with oxygen gas to form carbon.
D) Gaseous water condenses on the sides of a cool soda can to make water droplets.
C) Sugar reacts with oxygen gas to form carbon.
A chemical change is best described as:
A) A change where a substance changes color.
B) A change where an explosion occurs.
C) A change where a substance changes its state of matter
D) A change where a new substance is formed.
D) A change where a new substance is formed.
Which of the following represents a physical change?
A) acid rain reacting with a metal
B) a block of ice melting
C) a meter reacting with water in the air
D) two gases reacting to form a solid
B) a block of ice melting
Which element of the Periodic Table is a solid magnetic metal?
A) bromine
B) nickel
C) sulfur
D) mercury
B) nickel
_____ is a physical property:
A) magnetism
B) flammability
C) reactivity with oxygen
D) non-reactive
A) magnetism
_____ is a chemical property.
A) color
B) toxicity
C) harness
D) solubility
B) toxicity
_____ is a physical property.
A) odor
B) reacts with water to create hydrogen gas
C) burns in air
D) rust
A) odor
_____ is a physical property.
A) melting point
B) flammability
C) reactivity
D) combustion
A) melting point
_____ is a chemical property.
A) malleability
B) combustion
C) texture
D) sour taste
B) combusion
_____ is a physical property.
A) electromotive force
B) combustion
C) boiling point
D) reactivity with water
C) boiling point
