Which of the following molecules are ionic?

A. RbNO3

B. Na2SO4

C. MgCl2

D. NaI

E. All of the above

Which of the following molecules are covalent?

A. SO2

B. C2H2O

C. NO2

D. SiO2

E. All of the above

Why is it important for scientists to share information from their investigations?

What one factor identifies an atom as a specific element?

Uranium can be mined and then immediately used in a nuclear power plant. true or false

Which of the following is the primary nutrient used in metabolism? 1) sugar 2) Lipids 3) Proteins 4) genetic material

Gizmo Covalent Bonds

Correctly identify the generic formula for a synthesis reaction. a. AB + A+B b. A+B → AB c. CxHx + O2 → CO2 + H2O d. AB + C + AC + B e. AB + CD → AD + CB

Zinc phosphide, Zn3P2, is often used as a rat poison. Phosphorus has 5 valence electrons. How many valence electrons does each zinc atom lose?

Nonrenewable resources are?

Watch the animation, then check off the samples that will conduct electricity. Check all that apply. View Available Hint (s) Check all that apply. NaCl solution Solid NaCl Solid sugar Sugar solution

Burning wood represents a chemical change. True or False?