8th Grade Practice Midterm 1

Front

What is the modern periodic table organized by?

Back

The modern periodic table is organized in order of increasing atomic number.

Front

What determines the properties of an element?

Back

The properties of an element and the way its atoms combine are determined mainly by the number and the arrangement of the particles in its atoms.

Front

How do you calculate density?

Back

Density is calculated by dividing mass by volume.

Front

What is the atomic mass of Nitrogen (N)?

Back

The atomic mass of Nitrogen (N) is 14.007 u.

Front

What two measurements are used to determine density?

Back

Density is determined by mass and volume.

Front

Define atomic number.

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the formula for density?

Back

Density = Mass / Volume.

Front

What is the significance of the arrangement of electrons in an atom?

Back

The arrangement of electrons in an atom determines how the atom interacts with other atoms and its chemical properties.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is the unit of atomic mass?

Back

The unit of atomic mass is unified atomic mass units (u), also known as daltons.