Second Grade ReviewPart One

Scientific Process and Matter

Safety

In science class youshould-• Always use good

behavior• Use safety goggles

when your teacher tells you to

• Handle equipment and animals properly

Scientific Process

• Problem

• Hypothesis

• Investigate

• Conclusion

When You Investigate• Observe• Classify• Predict• Experiment• Measure

Tools

Hand Lens Goggles

Measuring Matter• Mass grams

• Length centimeters

Measuring LengthYou can usecentimetergram cubesto measurein centimetersCrayon = 8 cm

Using a Balance ScaleThe balance scale is evenlybalanced. The block has a massof 8 grams.

Using a Balance ScaleThe side with thecrayon is tilting up.The crayon has amass less than8 grams.

Using a Balance Scale

The side with the apple istilting down.The apple hasa mass greaterthan 8 grams.

Matter

• Solid

• Liquid

• Gas

Properties of Matter• Color

• Size

• Shape

• Texture

More Properties of Matter

Flexibility

Magnetic

Sink

Float

Ways Matter Can Change

• Cutting

• Folding

• Sanding

More Ways Matter Can Change

• Melting

• Heating

• Cooling