chemistry

Choose which one of the pictures are chemical change

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Choose which one of the pictures are physical change

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What’s the states of matter….?

• Liquid-solid-gas

• Liquid-salt-gas

Changes that alter only the state or appearance, but NOT composition are….?

• Physical change

• Chemical change

Changes that alter the composition of matter are…..?

• Chemical change

• Physical change

‏A solution of water and sugar contains 20 grams of sugar in 150 ml of water. What is the density of the sugar water…?

• 0.31

• 7.5

• 0.13

• 0.15