Active Chem Unit 1 Review

This is a pure substance which cannot be chemically broken down into simpler materials.

• Element

• Compound

• Ion

• Isotope

The following is a definition of what: smallest particles that retain the properties of an element.

• atom

• cation

• anion

• isotope

This property can only be described when a reaction takes place.

• chemical

• physical

• mass

• density

Tags

NGSS.MS-PS1-2

This property does not change the nature of the substance.

• chemical

• physical

• density

• mass

Tags

NGSS.HS-PS1-1

Which of the following is NOT a type of radiation?

• alpha

• beta

• delta

• gamma

The majority of known elements are _______________.

• metals

• metalloids

• noble gases

• non-metals

Which of the following does not belong on the list?

• electrons

• protons

• neutrons

• radiation

Tags

NGSS.HS-PS1-8

On the Periodic Table, elements are arranged in what order?

• increasing atomic number

• increasing atomic mass

• increasing number of isotopes

• increasing radioactivity

Tags

NGSS.HS-PS1-1

Elements with the same atomic number but a different number of neutrons are called ____________.

• cations

• anions

• isotopes

• wayward atoms.

Tags

NGSS.HS-PS1-8

Which is the currently accepted model or theory of an atom?

• Bohr Model

• Quantum Mechanical Model

• Mendeleev's Model

• Newtonian Model