Acids and Bases in Solution — Cumulative exam Answers

During a camping trip, Sierra collected dry branches and broke them into smaller pieces. She then placed the sticks in a fire pit and used a match to light the sticks on fire. Next, she propped a metal pan of water over the fire and heated it until the water boiled.

There are several ways to model a compound. One type of model is shown.

A researcher is using a particle accelerator in an experiment studying isotopes. How can the researcher change one isotope into a different isotope of the same element?

The graph indicates Linda’s walk.

This table shows the pH values of different solutions.

In an investigation, the atoms of a certain substance lose energy during a change of state. Before the change, the atoms are far apart and move constantly at high speeds and in all directions. After the change, the atoms are close together but are able to slide past one another.Use the diagram that shows changes of state between solid, liquid, and gas to answer the question.

Which is the balanced equation for S8 + O2 → SO2?

Which ingredient would a company that makes super-sour candy most likely use in large quantities?

A solution is oversaturated with solute. Which could be done to decrease the oversaturation?

Which statement correctly describes compounds?

Kenneth ran a marathon (26.2 miles) in 5.5 hours. What was Kenneth’s average speed? (Round your answer to the nearest tenth.)

This chart shows what happens when each object is placed on a balance with a 10 kg weight on the other side.Which statement is best supported by the information in the chart?

What did Thomson’s model of the atom include that Dalton’s model did not have?

Covalent bonds tend to make atoms more stable by helping them

A cylinder at left with balls evenly spaced throughout the cylinder has an arrow leading to a cylinder at right cylinder with balls in a layer at its bottom.

Natalia began to draw a diagram to compare bases and acids.

The symbol P represents the element phosphorus. This element’s atomic number is 15. How many protons and electrons are in a P–3 ion?

Sodium hydroxide (NaOH) was added to pure water (H2O). Which most likely were the pH values of the water before and after the sodium hydroxide was added to it?

Juliana was late to physical science class and missed the beginning of the notes, including the title. These are the notes she took.-Makes up everything -Can be solid, liquid, or gas -Is made up of atoms, or tiny particles that are the smallest unit of matterWhat would be the best title for her notes?