Atoms and Atomic Theory Vocabulary

What is the term used to describe the ability of one substance to dissolve into another?

• Molecule

• pH

• Solubility

• Compound

What is a molecule?

• A substance made up of atoms or ions of two or more different elements joined by chemical bonds

• A sample of matter with definite chemical and physical properties

• Two or more atoms that are held together by covalent bonds and act as a unit

• A vertical column on the periodic table

Tags

NGSS.MS-PS1-1

Which of the following best defines a heterogeneous mixture?

• A mixture with a uniform structure of composition throughout

• A mixture in which the substances are not chemically combined and have a uniform structure of composition throughout

• A mixture in which the substances are not evenly mixed and do not have a uniform structure of composition throughout

• A mixture in which two or more substances are evenly mixed, but not bonded together

What is a compound?

• A chart of the elements arranged into rows and columns

• A substance made up of atoms or ions of two or more different elements joined by chemical bonds

• A vertical column on the periodic table

• An inverse measure of the concentration of Hydronium ions in a solution

What does the pH scale measure?

• The ability of one substance to dissolve into another

• The concentration of Hydrogen ions in a solution

• The concentration of Hydronium ions in a solution

• The number of protons in an element

What is another name for a homogeneous mixture consisting of a solvent and a solute?

• solubility

• solution

• molecule

• mixture

What is a sample of matter, either a single element or a single compound, that has definite and physical properties?

• molecule

• pure substance

• mixture

• element

What is a combination of two or more substances that are not chemically combined?

• mixture

• solution

• molecule

• element

What is a chart of the elements arranged into rows and columns according to their physical and chemical properties?

• group

• period

• element

• Periodic Table

What is a mixture in which two or more substances are evenly mixed, but not bonded together?

• heterogeneous mixture

• homogeneous mixture

• compound

• mixture