Cellular Biology Basics

______ is anything that has mass and takes up space.

Which types of substances cannot be broken down into simpler substances by chemical or physical means?

• compounds

• elements

• heterogeneous mixtures

• homogeneous mixtures

Which of the following examples are compounds? (Note: You may check more than one!)

• H₂O

• O₂

• CO₂

• H₂

What type of bond involves the sharing of electrons?

• Covalent

• Ionic

• Both covalent and ionic

• Neither covalent nor ionic

Which type of bond involves the transfer of electrons?

• Covalent

• Ionic

• Both covalent and ionic

• Neither covalent nor ionic

An ___ is an atom (or group of atoms) that have gained or lost electrons.

The pH of solutions can be measured using the pH scale and are classified as acidic, basic and neutral. In the space provided, write three things related to this statement that you already know. For example, you could name substances that are acidic, neutral or basic or could reference an experiment you've done before.

Which type of chemical reaction involves the breakdown of a larger substance into two or more simpler substances?

• synthesis

• decomposition

• neutralization

• single displacement

• double displacement

List as many signs of a chemical reaction as you can.

Cells use cellular respiration to get usable energy. Check off the reactants of cellular respiration from the list below.

• oxygen

• carbon dioxide

• ATP

• water

• sugar (glucose, C₆H₁₂O₆)