Chemical Properties — Unit test Answers

A column is filled with four different liquids of different densities. A red liquid, a blue liquid, a green liquid, and a purple liquid are all added into the column. This chart shows the densities of the liquids.In what order would the liquids arrange themselves, from top to bottom?

Which describes a feature of the physical changes of all substances?

Four students made statements about a tennis ball they were using in a lab.Which student made a mistake in her statement?

Three grams of the same substance in different phases are stored in three different containers. Each container is barely large enough to hold the substance.Which statement can be known about the behavior of the atoms in each container?

Which procedure would best allow a scientist to observe a chemical property of hydrochloric acid (HCl) solution?

Suppose that a substance in a beaker is heated over a burner in a science lab. Which observation would most likely indicate that a chemical change has occurred in the substance?

Which would show an example of how physical changes are reversible?

During which change of state do atoms lose energy?

What is the density of a 700 kg object with a volume of 649 m3? (Density: D = )

Sari is studying four different samples of materials. This table shows the mass and volume of the samples.

Abi measures the volume and weight of four objects and records his data in this table.Which object has the most mass?

The diagram shows changes of state between solid, liquid, and gas. The atoms of a substance gain energy during a change of state. Before the change, the atoms are close together and cannot slide past one another. After the change, the substance can fill its container.

A substance occupies one half of an open container. The atoms of the substance are closely packed but are still able to slide past each other.What is most likely the phase of the substance?

Venn diagrams are used for comparing and contrasting different topics. The overlapping sections show characteristics that the topics have in common, and the sections that are unique to each topic show the characteristics apply to only that topic.

Which is the amount of matter in an object?

The density of an object is .835 g/cm3. If its volume is 34 cm3, what is the mass of the object? (Density: D = )

Which is most likely a physical change?

Which is a characteristic of atoms?

Which is the process by which a gas changes to a solid?

Rahul sees a flock of birds. He watches as the flying birds land in neat little rows on several power lines. Which change of state does the motion of the birds most closely model?