Matter and energy Day 2

Matter and energy Day 2

Multiple Choice

A scientist performs tests on a sample on a sample of an element. The element is a shiny solid that conducts electricity and heat. The scientist is able to bend and flatten the sample when pressure is applied to it. Based on this information, the element could NOT be a member of which group on the periodic table?

• Group 2

• Group 8

• Group 12

• Group 18

Multiple Choice

A student is studying the ways different elements are similar to one another. Diagrams of atoms from four different elements are shown. Which two atoms are of elements in the same group in the periodic table?

• Atom 1 and Atom 2

• Atom 1 and Atom 4

• Atom 2 and Atom 3

• Atom 3 and Atom 4

Multiple Choice

A student is trying to classify an unidentified, solid gray material as a metal or a nonmetal. Which question will best help the student classify the material?

• Is the material malleable or ductile?

• Does the material feel hard to the touch?

• Will the material float in water?

• Does the material feel rough or smooth?

Multiple Choice

Which statement does NOT correctly compare silicon with another element?

• Silicon is a better conductor of electricity than sulfur

• Silicon conducts electricity as well as copper does

• Silicon is a solid at room temperature, but argon is a gas

• Silicon is less malleable than silver

Multiple Choice

A compound secreted by honeybees to paralyze intruders in their hive is known as heptanone.  
How many atoms of each element are in one molecule of 2-heptanone?

• 4 carbon atoms, 11 hydrogen atoms, and 1 oxygen atom

• 7 carbon atoms, 14 hydrogen atoms, and 1 oxygen atom

• 7 carbon atoms, 11 hydrogen atoms, and 8 oxygen atom

• 6 carbon atoms, 14 hydrogen atoms, and 3 oxygen atom

Multiple Choice

Which chemical reaction involves the fewest oxygen atoms?