Which of the following is an example of a physical change? grinding coffee beans baking cake converting water to hydrogen and oxygen digesting a cheeseburger

The products of the reaction: $Ag+HCl\rightarrow $ ? are: A $AgCl_{3}$ and $H_{2}$ B AgH and $Cl_{2}$ C no reaction

A chemical equation is balanced when: A The number of atoms of each element is the same on both sides B The coefficients are all "1" on both sides C The coefficients add up to the same number on both sides D The subscripts are all identical on both sides

14. What is the concentration of $H_{3}O^{+}$ ions in the 0 .003 M $H_{2}SO_{4}$ solution? What is the pH of this solution?

It is best to stir a suspension using a Select one: a. wooden spoon. b. stirring rod. C. glass mortar. d. weigh boat handle.

What are the two types of luster? Shiny and Dull Metallic and Non-metallic Earthy and Non-Earthy Dark and Light Colored

Question 4(Multiple Choice Worth 4 points) (01.06 MC) Water is a pure substance. Which of the following is true about water? A chemical change is required to separate the elements present in it. A physical change is required to separate the elements present in it. It is made up of two compounds, each with a different set of atoms. It is made up of an element and a compound.

When sugar is burned , water vapor and carbon dioxide are produced. A sugar molecule has a specific number of carbon, hydrogen, and oxygen atoms. Use the balanced chemical equation to identify the number of carbon , hydrogen, and oxygen atoms in sugar. $sugar+12O_{2}\rightarrow 11H_{2}O+12CO_{2}$ Sugar has $\square $ carbon atoms. Sugar has $\square $ hydrogen atoms. Sugar has $\square $ oxygen atoms.

Elsa has a jar of honey that was left outside on a hot summer day. She notices that there are now sugar crystals at the bottom of the jar.What type of solution is the honey? unsaturated saturated supersaturated polyunsaturated

$2Na+2H_{2}O\rightarrow 2NaOH+H_{2}$ If we start with 20 moles of Na, how many moles of NaOH will be produced? A 10 moles B 5 moles C 20 moles D None of the above

Fill in the Blank Question When a water molecule dissociates, the $\square $ ion, which bears a negative charge, is produced. Need help? Review these concept resources.