Chemistry Midterm 21-22

Last updated almost 4 years ago

35 questions

Note from the author:

This is a summative assessment that covers the following topics:
History of Chemistry
Matter and changes (physical and chemical)
Atomic structure
Atomic Theory
History of the Periodic Table
Classification of elements and their characteristics.

Required

Draggable item		Corresponding Item
mass number		total number of particles that make up the nucleus of an atom
atomic mass		the weighted average of the masses of the isotopes of an element
atomic number		number of protons in the nucleus of an atom
isotope		atoms with the same number of protons, but different numbers of neutrons in the nucleus of an atom

Draggable item		Corresponding Item
JJ Thomson		Billiard Ball Model
Ernest Rutherford		Plum pudding Model
John Dalton		Nuclear Atom

Draggable item		Corresponding Item
period		horizontal row in the periodic table
group		vertical column in the periodic table
electronegativity		A repetition of properties occurs when elements are arranged in order of increasing atomic number
periodic law		subatomic particles that are transferred to form positive and negative ions
electrons		ability of an atom to attract electrons when the atom is in a compound

	Metals	Nonmetals
Lose valence electrons when making compounds
Have high electronegativity values
Most are solids
If solid, they're brittle
Most have low boiling points

Draggable item		Corresponding Item
mass number		total number of particles that make up the nucleus of an atom
atomic mass		the weighted average of the masses of the isotopes of an element
atomic number		number of protons in the nucleus of an atom
isotope		atoms with the same number of protons, but different numbers of neutrons in the nucleus of an atom

Chemistry Midterm 21-22

Chemistry Midterm 21-22

It is defined as the discipline that studied matter as early as 400 BC. It had the purpose of finding the way to the perfect health and the transformation of materials of lesser value into the perfect metal.

Area of science that studies matter and the changes it can go through as well as its composition, properties and structure.

Select those that are contributions of Lavoisier

It is defined as knowledge acquired in a systematic way, based on careful and methodical experimentation.

Which of the following are pure substances?

A substance represented by a chemical formula is known as:

State of Matter is a chemical property of matter

Classify the following into Pure Substances and Mixtures

A substance is made up of only one kind of atom is a (an)

Which of the following is a characteristic of a mixture?

Which of the following is a chemical change?

Which state of matter has a definte volume?

Separating a solid from a liquid by evaporating the liquid is called...

What is the difference between a mixture and a compound?

What happens to matter during a chemical reaction?

Which of the following phase is an endothermic change?

Which of the following phase is an exothermic change?

On the sun, where temperatures are extremely high, matter exists in a state know as plasma

Smallest particle of matter that still retains its properties is called:

Which of the following was originally a tenet of Dalton's atomic theory, but had to be revised about a century ago?

Match the item with the statement

Match each item with the correct statement.

Match the person to the proposed model of the atom

Werner Heisenberg stated the "uncertainty principle" that you can't know both position and velocity of a particle

Categories of elements in the periodic table

Figure 5-1 shows a portion of a blank periodic table. Identify the segments labeled A and B.

What is another name for the representative elements?

What is the charge of a cation?

How many valence electrons does antimony have?

Classify the statement as a characteristic of the type of element

How many elements are in the periodic table?

A fictitious element X is composed of 10.0 percent of the isotope X-55, 20.0 percent of the isotope X-56, and 70.0 percent of the isotope X-57. Estimate the atomic mass of element X.

It is defined as the discipline that studied matter as early as 400 BC. It had the purpose of finding the way to the perfect health and the transformation of materials of lesser value into the perfect metal.

Area of science that studies matter and the changes it can go through as well as its composition, properties and structure.

Select those that are contributions of Lavoisier

It is defined as knowledge acquired in a systematic way, based on careful and methodical experimentation.

Which of the following are pure substances?

A substance represented by a chemical formula is known as:

State of Matter is a chemical property of matter

Classify the following into Pure Substances and Mixtures

A substance is made up of only one kind of atom is a (an)

Which of the following is a characteristic of a mixture?

Which of the following is a chemical change?

Which state of matter has a definte volume?

Separating a solid from a liquid by evaporating the liquid is called...

What is the difference between a mixture and a compound?

What happens to matter during a chemical reaction?

Which of the following phase is an endothermic change?

Which of the following phase is an exothermic change?

On the sun, where temperatures are extremely high, matter exists in a state know as plasma

Smallest particle of matter that still retains its properties is called:

Which of the following was originally a tenet of Dalton's atomic theory, but had to be revised about a century ago?

Match the item with the statement

Match each item with the correct statement.

Match the person to the proposed model of the atom

Werner Heisenberg stated the "uncertainty principle" that you can't know both position and velocity of a particle

Categories of elements in the periodic table

Figure 5-1 shows a portion of a blank periodic table. Identify the segments labeled A and B.

What is another name for the representative elements?

What is the charge of a cation?

How many valence electrons does antimony have?

Classify the statement as a characteristic of the type of element

How many elements are in the periodic table?

A fictitious element X is composed of 10.0 percent of the isotope X-55, 20.0 percent of the isotope X-56, and 70.0 percent of the isotope X-57. Estimate the atomic mass of element X.