Introduction to Chemistry

The top number is the element’s ________.

• Isotope

• Atomic Number

• Element

• Mass Number

Atoms of the same element that have different numbers of neutrons.

• Isotope

• Atomic Number

• Element

• Mass Number

Number of protons plus the number of neutrons it contains.

• Isotope

• Atomic Number

• Element

• Mass Number

Weighted average mass of the isotopes of an element.

• Metals

• Nonmetals

• Atomic Mass

• Metalloids

Tags

NGSS.HS-PS1-8

Generally have a shiny or metallic luster and are good conductors of heat and electricity.

• Metals

• Nonmetals

• Atomic Mass

• Metalloids

Elements that have characteristics of metals and nonmetals.

• Metals

• Nonmetals

• Atomic Mass

• Metalloids

Matter that has the same composition and properties throughout

• Substance

• Mixture

• Compound

Substance whose smallest unit is made up of atoms of more than one element bonded together.

• Substance

• Mixture

• Compound

When two or more substances (elements or compounds) come together but don’t combine to make a new substance, it is called ___.

• Substance

• Mixture

• Compound

What is often called the universal solvent?

• sodium chloride

• oxygen

• sodium

• water