9th Grade Physical Science Review

What is the chemical symbol for water?

• H

• O

Tags

NGSS.MS-PS1-1

Which of the following is a physical change?

• Burning wood

• Rusting iron

• Melting ice

• Baking a cake

Which of the following best describes an element?

• A substance that can be broken down into simpler substances

• A substance made of two or more different atoms

• A pure substance consisting of only one type of atom

• A mixture of different compounds

Explain why metals are good conductors of electricity.

• Metals have free electrons that can move easily

• Metals have tightly bound electrons

• Metals are insulators

• Metals have high melting points

What is the formula for calculating speed?

• Speed = Distance × Time

• Speed = Distance ÷ Time

• Speed = Time ÷ Distance

• Speed = Distance + Time

Tags

NGSS.MS-PS3-1

Which of the following is an example of a chemical property?

• Color

• Density

• Flammability

• Melting point

If a car travels 150 kilometers in 3 hours, what is its average speed?

• 50 km/h

• 45 km/h

• 60 km/h

• 55 km/h

Which of the following statements is true about the law of conservation of mass?

• Mass can be created or destroyed

• Mass is conserved in a closed system

• Mass changes with chemical reactions

• Mass is only conserved in physical changes

Tags

NGSS.MS-PS1-5

Design an experiment to test the effect of temperature on the solubility of sugar in water.

• Measure the mass of sugar dissolved at different temperatures

• Observe the color change of sugar in water

• Record the time taken for sugar to dissolve at room temperature

• Compare the taste of sugar solutions at different temperatures

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4