working scientifically

Which of the following is an example of quantitative data?

• The weight of a book
• The color of a flower
• The taste of an apple
• The smell of a perfume

What are the characteristics of chemical reactions?

• They involve rearranging atoms into new substances
• They involve breaking and making chemical bonds
• They are usually easy to reverse and do not make new chemicals
• They make new chemicals and are irreversible

What is data?

• A type of chemical reaction
• A physical change
• A qualitative observation
• Information recorded in a scientific experiment

What are the characteristics of physical changes?

• They make new chemicals and are irreversible
• They involve breaking and making chemical bonds
• They are usually easy to reverse and do not make new chemicals
• They involve rearranging atoms into new substances

What is the difference between quantitative and qualitative data?

• Quantitative data describes qualities or characteristics, while qualitative data can be counted or measured
• Quantitative data is always measured, while qualitative data is always counted
• Quantitative data and qualitative data are the same thing
• Quantitative data can be counted or measured, while qualitative data describes qualities or characteristics

What are the uses of chemical reactions?

• To reverse physical changes and rearrange atoms
• To measure temperature and describe qualities
• To count and measure data
• To make new chemicals and generate energy

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

• Boiling water
• Melting ice
• Burning wood
• Dissolving salt in water

Which of the following is an example of a chemical reaction used in everyday life?

• Brushing teeth
• Taking a shower
• Cooking food
• Driving a car

Which of the following is an example of qualitative data?

• The boiling point of water
• The texture of sand
• The length of a pencil
• The number of students in a class