Physical and Chemical Changes Sample Questions for Class 7
Question 1
A state of matter that has a definite volume but has no definite shape is a .
A. liquid
B. solid
C. gas
Question 2
The process that creates haploid cells is
A. meiosis.
B. mitosis.
C. cytokinesis.
D. fission.
Question 3
The brain of the cell that controls all of the cell's activities and contains hereditary material is the
A. nucleus.
B. rough ER.
C. ribosome.
Question 4
In science, an educated guess is a(n)
A. observation.
B. conclusion.
C. question.
D. hypothesis.
Question 5
A state of matter that has a definite shape and a definite volume is a .
A. liquid
B. solid
C. gas