If a metal is malleable, then it is able to

• conduct electricity

• hammered into sheets, molded or shaped

• shine

• freeze

What are the properties of a metal?​ (a)   ​ (b)   ​ (c)   ​

• malleable
• dull
• insulator
• shiny
• conductor
• brittle

A _____________ is dull, brittle, and and insulator.

The symbols Ca and Cl are represent what in the chemical formula CaCl?

• atoms

• elements

• compounds

• symbols

Tags

NGSS.MS-PS1-1

Using the pie chart, what is the 2nd most abundant element in the Earth's atmosphere?

• H

• N

• O

• Other Elements

How many elements are in the compound NaHCO₃ ?

• 4

• 6

• 5

• 8

Tags

NGSS.MS-PS1-1

Match the term element to the chemical symbol

• element

• H₂ O

• not an element

• Calcium

• element

• O₂

• element

• NaCl

• not an element

• Na

Tags

NGSS.MS-PS1-1

Using the table, identify the element which is classified as a metalloid?

• Titanium

• Selenium

• Potassium

• Polonium

Using the data table, which element can be classified as a nonmetal?

• Titanium

• Polonium

• Potassium

• Selenium

Which of the following is true about elements?

• An element is a pure substance

• An element is represented by a chemical symbol

• An element is made of 2 or more pure substances chemically bonded.

• Elements make up matter in the Earth