Isaac's midterm review

Which type of chemical bond involves the sharing of electron pairs between atoms?

• Ionic bond

• Covalent bond

• Metallic bond

• Hydrogen bond

What is the first step in the scientific method?

• Formulating a hypothesis

• Conducting an experiment

• Making an observation

• Analyzing data

Which of the following statements is true about isotopes?

• Isotopes have different atomic numbers.

• Isotopes have the same number of neutrons.

• Isotopes have the same number of protons but different numbers of neutrons.

• Isotopes have different chemical properties.

Tags

NGSS.HS-PS1-8

Which periodic trend increases as you move from left to right across a period in the periodic table?

• Atomic radius

• Ionization energy

• Metallic character

• Electron affinity

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons does an atom of sulfur have?

• 4

• 6

• 8

• 2

Tags

NGSS.HS-PS1-1

What is the primary component of atomic spectra?

• Neutrons

• Electrons

• Protons

• Photons

Tags

NGSS.HS-PS4-3

Tags

NGSS.MS-PS1-1

Which part of the atom contains the majority of its mass?

• Electron cloud

• Nucleus

• Proton shell

• Neutron orbit

Tags

NGSS.HS-PS1-8

How many significant figures are in the measurement 0.004560?

• 3

• 4

• 5

• 6

Express the number 0.00032 in scientific notation.