Chemistry of Life Quiz 1

The three particles that make up atoms are 

• protons, neutrons, and isotopes
• neutrons, isotopes, and electrons
• positives, negatives, and neutrals
• protons neutrons, and electrons

If an atom contains 4 protons, 5 neutrons, and 4 electrons, its mass number is

• 4
• 5
• 9
• 13

If an atom contains 12 protons and 13 neutrons, its atomic number is 

• 12
• 13
• 1
• 25

Which of the following is a substance formed by the chemical joining of two or more elements in definite amounts?

• compound
• isotope
• nucleus
• mixture

Tags

NGSS.MS-PS1-1

Which of the following makes up a molecule of water?

• one atom of hydrogen and one atom of oxygen
• one atom of sodium and one atom of chlorine
• one atom of hydrogen and two atoms of oxygen
• two atoms of hydrogen and one atom of oxygen

Tags

NGSS.MS-PS1-1

Which of the following statements about a compound is true?

• The physical and chemical properties of a compound are usually very different from those of the elements from which it is formed
• Only the physical properties of a compound are usually the same as those of the elements from which it is formed
• Only the chemical properties of a compound are usually the same as those of the elements from which it is formed
• The physical and chemical properties of a compound are usually the same as those of the elements from which it is formed

A covalent bond is formed as the result of

• transferring electrons
• sharing electrons
• transferring protons
• sharing protons

Tags

NGSS.HS-PS1-1

What type of electron is available to form bonds?

• valence
• nucleus
• ionic
• covalent

What type of ion forms when an atom loses electrons?

• neutral
• positive
• negative
• radioactive

Which property of water causes the curved surface (a meniscus) in a graduated cylinder?

• ph
• cohesion
• adhesion
• heat capacity