Matter

Properties such as magnetism, luster, and malleability have been used to group together which category of elements on the periodic table?

• metals

• nonmetals

• metaloids

• noble gases

What general category describes the majority of the elements in the periodic chart?

• metals

• liquids

• nonmetals

• gases

If a highly-reactive metal with one valence electron is discovered, in which group would the element best fit?

• group 1

• group 2

• group 17

• group 18

Electrons located in an atom's outer most electron shell.

• electrolysis

• valence electrons

• electronics

• election

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In which groups did Mendeleev most likely place highly-reactive elements?

• group 1 (IA) and group 17 (VIIA)

• group 1 (IA) and group 18 (VIIIA)

• group 2 (IIA) and group 18 (VIIIA)

Which best explains how the periodic table is used to identify properties of elements?

• by the color and shape of the elements

• by the number of electrons in the elements

• by the group in which the elements are located

An engineer needs a hard, non-magnetic semiconductor. Which element would best fit this description?

• aluminum (Al)

• carbon (C)

• silicon (Si)

• silver (Ag)

A chemist observed bubbling and fizzing after adding an acid solution to a white powdery substance in a beaker. Which of the following can be inferred?

• The acid boiled when poured into the beaker.

• The acid and powder formed a new product.

• A physical reaction produced a gas mixture.

• A reaction occurred that produced heat.

Tags

NGSS.MS-PS1-2

Which task in the kitchen is an example of a physical change?

• frying an egg

• baking a cake

• toasting bread

• melting butter

Tags

NGSS.MS-PS3-4

John and Lisa collected a sample of ocean water and placed it in a jar. Within a couple of days, the water had evaporated and salt was visible at the bottom of the jar. This is an example of a

• chemical change

• physical change

• solute being dissolved

• new substance being formed

Tags

NGSS.MS-PS1-4