What gives elements in a family or group similar properties?

a. the same atomic mass

b. the same number of protons in their nuclei

c. the same number of electrons in their outer energy level

d. the same number of total electrons?

Which of these illustration shows isotopes of the elements boron b

Evidence of a chemical change does NOT include A) producing a gas. B) change in color. C) change in shape. D) change in temperature.

Why are the reactivity and binding capabilities of carbon crucial to life?

Click to review the online content. Then answer the question (s) below, using complete sentences. Scroll down to view additional questions. Online Content: Site 1 What resource is often compromised due to mining?

The substances below are listed by increasing specific heat capacity value. Starting at 30.0 °C, they each absorb 100 kJ of thermal energy. Which one do you expect to increase in temperature the least? Cadmium, 0.230 J / (g °C) Sodium, 1.

What is the amount of heat released when 25g of water cools 12.5 degrees C?

What is hotter 17 degrees celcius or 58 degrees Fahrenheit

How do aqueous solutions of ionic and molecular compounds differ

Which reaction represents an unbalanced neutralization reaction? Na + H2O NaOH + H2 HNO3 + NaOH NaNO3 + H2O NaNO3 + H2O HNO3 + NaOH H2O H2 + O2

How does the health of polar bears indicate the health of the environment