One atom of silicon can properly be combined in a compound with

a. three atoms of hydrogen.

b. four atoms of calcium.

c. two atoms of oxygen.

d. one atom of chlorine.

suppose you mix several liquids in a jar. After a few minutes, the liquids form layers. Is this a homogeneous mixture or a heterogeneous mixture? Why?

Which of the following views of weather is an example of systems thinking

Is tap water a compound, a homogenous mixture, or a heterogeneous mixture?

The partial pressures of CH 4, N 2, and O 2 in a sample of gas were found to be 183 mmHg, 443 mmHg, and 693 mmHg, respectively. What is the mole fraction of nitrogen?

A mixture with uniform physical properties is a heterogeneous mixture. a) True b) False

Label each reactant as either a Bronsted-Lowry acid or a Bronsted-Lowry base. a. HF (aq) + H2O (l) - -> H3O + (aq) + F - (aq) HF (aq) ["Bronsted-Lowry acid", "Bronsted-Lowry base"] H2O (l) ["Bronsted-Lowry acid", "Bronsted-Lowry base"] b.

What are three conditions that can cause chemical reactions to occur?

Facts about heat absorption and simple questions about heat absorption with answer

You measure a piece of wood with a meter stick and is it exactly one meter long. How many centimeters long is it?

When salt dissolved in water, what type of change occurs? A) physical only B) chemical only C) physical and chemical