6.5ABC: Elements, Compounds and Chemical Changes

How many elements are in FeO?

• 1

• 2

• 3

Tags

NGSS.MS-PS1-1

Compounds are different than elements. Compounds are made of

• the same type of element.

• different types of elements.

Tags

NGSS.MS-PS1-1

Which of the following is shared in all chemical reactions/changes?

• They all produce a precipitate.

• They all show a color change.

• They all produce a gas..

• They all form new substances.

This picture represents part of the Periodic Table.

“Na” is called the element’s

• formula

• name

• symbol

• compound

Which of the following represents an element?

• Cr

• CaO

• NaCl

• CO

Which of the following list only chemical changes?

• silver tarnishing, leaves changing color, water separating into hydrogen and oxygen

• ice melting, sugar dissolving in water, paper tearing

• glass breaking, breath condensing on a window, sanding wood

• grinding chalk into a powder, mixing kool-aid into water, making a salad

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is FALSE about an element?

• Made from a mixture

• It is a pure substance

• It is represented by a symbol

• They make up all matter on Earth

What is the smallest building block of matter?

• Compounds

• mixtures

• atoms

• pizza

Tags

NGSS.MS-PS1-1

Which choice would be a molecule?

• O

• H

• Au

• H₂

Tags

NGSS.MS-PS1-1

Look at your periodic table, what are the chemical symbols for Gold and Copper?

• G & C

• Au & Cu

• Na & Cl

• Zn & Ga