(M)Physical Science Semester I Final Exam 2024

Front

How should long hair in a laboratory be kept?

Back

tied back

Front

Which two times of day was the temperature the same? Options: 7:00 AM and 7:00 PM, 7:00 AM and 10:00 PM, 10:00 AM and 7:00 PM, 10:00 AM and 10:00 PM

Back

10:00 AM and 10:00 PM

Front

Which year was the smallest number of pennies found? 1988, 1989, 1990, 1991

Back

1991

Front

Which gas is the most abundant in the atmosphere? Options: carbon dioxide, nitrogen, oxygen, hydrogen

Back

nitrogen

Front

According to the graph below, how many worms were 6 cm long?

Back

4

Front

Which statement about the atomic nucleus is correct? Options: The nucleus is made of protons and neutrons and has a negative charge, The nucleus is made of protons and neutrons and has a positive charge, The nucleus is made of electrons and has a positive charge, The nucleus is made of electrons and has a negative charge

Back

The nucleus is made of protons and neutrons and has a positive charge

Front

What is the charge of an electron?

Back

-1

Front

What do atoms of elements that are in the same group have the same number of?

Back

valence electrons

Front

What do the valence electrons in an atom determine?

Back

chemical properties

Front

Which of the following elements is an alkali metal? calcium, magnesium, mercury, sodium

Back

sodium