What is the smallest part of an element?

Jane saw the letter P on a container in the science lab. Which element was MOST likely found in the container?

Which item listed below is NOT considered an element?

Which of the following lists contains only elements and a reason why they are elements?

Which of the following examples most closely represents what it means to be an element?

Julian is using the chemical formulas for various substances to classify them as either a compound or an element. Which of the following should he identify as an element?

Ryan is using the chemical formulas for various substances to classify them as either a compound or an element. Which of the following should he identify as a compound?

Rebecca is using the chemical formulas for various substances to classify them as either a compound or an element. How should Rebecca classify Gold (Au)?

The instructions for a lab warned students to avoid putting Na in the liquid used during the experiment. What element should not be placed in the liquid?

What kind of pure substance forms when two elements chemically combine and are represented by a chemical formula?

Which of the following is the smallest or most simple particle?

Shelley has a balloon with a small amount of baking soda in it. She fits the open end of the balloon over a graduated cylinder containing some vinegar. As she lifts the end of the balloon, the baking soda pours into the vinegar causing bubbling and fizzing to occur. Marie observes the balloon begin to "fill" up. Based on these observations, which of these can Marie determine about the new substance formed by mixing baking soda with vinegar?

The Best Friend's Club uses "invisible ink" to write notes to each other. The invisible ink is actually lemon juice that is clear when it dries on paper, but turns brown when a club member holds a burning candle under the paper. Once it is heated, it is never invisible again. What type of change is occurring when the paper is heated?

Which of the following is a chemical property associated with wood?

Students are given a sample of an unknown material. They want to perform tests to determine its identity. Which test is MOST likely to change the sample into another material?

Which answer choice correctly lists only elements?

Which of the following lists contains an element followed by a compound that contains that element?

In the following chemical equation, how many different elements and compounds are represented? 4Fe + 3O2 --> 2Fe2O3

A solid produced by a chemical reaction in solution that separates from the solution is called

Rachel was researching the element silver, for her project about atoms. Silver is an element that is shiny, conducts electricity and is also malleable. What type of element is silver?

Miguel finds a solid, reflective object. After some tests, he determines that the object cannot be drawn into a wire and is not a very good conductor of electricity. The object that Miguel found is most likely a —

Randolph is performing a classification laboratory activity in his science course. He is looking at materials and classifying them as a metal or a nonmetal. Which of the following is the best list of physical properties of a metal?

Dion is testing materials in science class trying to determine which materials are metals and nonmetals. One substance crumbles when hammered and it does not conduct electricity. What type of substance is it most likely?

Which of the following have properties of both metals and nonmetals?

Luciana is trying to organize some materials by their physical properties. Which of the following would have a shiny luster, can conduct electricity and are malleable (can be shaped without cracking)?

Philip is trying to classify materials by their physical properties. When he is observing materials that are found as a gas at room temperature, what type of substance is he most likely observing?

A substance that is solid, has a shiny orange color, conducts electricity well, and melts when heated could MOST likely be classified as a —

Students were given four unknown substances and asked to observe their characteristics. Their observations are shown in the table below:

Which of the unknown substances is MOST likely a metal?

During an experiment, a student noticed that an unknown mineral could be scratched by quartz and scratch calcite. Based on the chart below, which mineral could the unknown substance NOT be?

Sarah was taking a walk with her friends. She looked down and saw two unknown minerals. When she dragged them across the sidewalk, she noticed that they produced the same color mark, but one scratched the other. What conclusion could Sarah draw?

Which of the following minerals CANNOT be scratched by a piece of quartz or by a piece of apatite?

Using the hardness scale below, which would be the hardness of a mineral that can be scratched by a penny but not by a fingernail?

The softest mineral on the Mohs hardness scale is —

Which of the following is not a good characteristic to use to determine a type of mineral?

A student finds that the mass of 25mL of an unknown liquid is 20.5g. What is the density of this substance?

Marcie fills a graduated cylinder with 15.OmL of water. Paul finds the mass of a marble to be 2.21g, then drops the marble into the graduated cylinder. If the meniscus on the cylinder is now at 16.3mL, what is the density of the marble?

Determine the density in g/cm3 of a mineral that has a volume of 3.8 cm3 and a mass of 22.4 g.

What is the mass of a piece of metal that has a volume of 4.22 cm3 and a density of 7.85 g/cm3?

Which of the following is a chemical property of iron?