Chemistry Review

Select all that are properties of metals.

• Conductors of electricity

• Luster

• Brittle

• Ductile

Which of these is a chemical change?

• Liquid water freezing

• Salt and water are mixed together

• Iron rusting

• An apple is cut up

Tags

NGSS.MS-PS1-2

When two liquids are mixed together, the mixture's temperature increases rapidly. Is this a chemical or physical change?

• Physical

• Chemical

• Neither

• Both

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Oxygen is a non-metal. Which side of the periodic table would you find oxygen on?

• Left

• Top

• Right

• Bottom

Select all that are true about compounds.

• They are made of one element.

• They are made of two or more elements.

• Elements chemically combine to form a compound.

• Compounds can be easily broken down into elements.

If a chemical comes into contact with your eyes, what should you do?

• Ignore it until the end of class

• Wait for the teacher to notice

• Flush your eyes with lots of water

• Tell your lab partner so they can tell the teacher

Select all that are true about elements

• Found on the periodic table

• Has one capital letter in its atomic symbol

• We know about 100 elements currently

• They are a pure substance

What is the formula for density?

• $D=\frac{v}{m}$

• $D=\frac{m}{v}$

• $D\ =\ m\times v$

• $D=m+v$

Is metal rusting a physical or chemical change?

• Physical

• Chemical

Tags

NGSS.MS-PS1-2

Two substances are mixed together. Which of these would tell you a chemical change occurred?

• A powder dissolved in a liquid

• Dye is one of the substances which caused a color change

• A solid is produced when two liquids are mixed together

• Water is heated to its boiling point

Tags

NGSS.MS-PS1-2