NEW
Font size
WorksheetsACIDS, BASES, and Changes of Matter
Total questions: 18
Worksheet time: 9mins
Spoiling of food is an example of a ____________________.
physical change
chemical change
no change at all
Which is an example of a different substance being formed?
breaking of a glass
freezing of water
melting of a metal
burning of a wood
Which of the following is an example of a chemical change?
frying of an egg
making a paper airplane
melting of an ice cream
squeezing a soda can
Which suggests there is a basic building block of matter?
All matter is composed of atoms.
Different elements can combine together.
All matter can change states with changes in temperature.
Different types of matter sometimes share similar properties.
For which of these substances is an atom the smallest unit that maintains the characteristics of the substance?
methane
hydrogen
acetone
Which of the following is a property of a base?
bitter taste
salty
sour taste
Which of these pH values represent an acid?
4
10
8
12
Which of the following is an acid?
sugar in water
vinegar
toothpaste
bleach
An acid is a solution that contains __________ ions dissolved in water.
positive
negative
Which of the following pH values represents a base?
2.1
6.8
4.6
8.1
If an acid is combined with a base of equal strength, the result will most likely be?
a stronger acid
a stronger base
a neutral solution
John decided to mix some vinegar with baking soda. He knew that a reaction occurred because he made careful observations. He noted that the mixture started to foam up and bubble, and it was white in color. How did John know that a chemical reaction occurred?
the color of the mixture
the smell of the vinegar
the formation of a gas
the formation of a precipitate
Which of the following statements is correct?
Blue litmus paper turns red when placed in a base.
Blue litmus paper stays blue when placed in an acid.
Red litmus paper turns blue when placed in a base.
Red litmus paper stays red when placed in a base.
Ammonia has a pH of 12. Ammonia is __________.
an acid
a base
Which of the following word pairs, correctly completes the sentence below? _______ are corrosive substances characterized as having a strong smell, a sour taste, and a _______.
Acids; pH less than 7
Bases; pH greater than 7
Acids; pH greater than 7
Bases; pH less than 7
What is shown in the picture?
an atom
a compound
an element
a mixture
A chemical change is a change in
an item's properties such as size, shape, density
an item's sound
an item that creates a new substance, releases light or heat
an item's look or state of matter
When you fold a piece of paper, which physical property changes?
color
size
texture
