Daily Science Review February 3, 2014.

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Presentation transcript:

Daily Science Review February 3, 2014

Which of the following is NOT a physical change that happens when water changes state? a. Water boils b. Water freezes c. Ice sinks d. Ice melts Monday

2 What kind of change occurs when gaseous nitrogen becomes very cold and changes to a liquid? a. physical b. chemical c. Both physical and chemical d. Neither chemical nor physical Tuesday

Jim made a mixed salad from the ingredients shown in the table. What was the mass of the salad after Jim added salad dressing to it? 75 grams 100 grams 140 grams More than 140 grams Ingredient Mass (in grams) Lettuce 75 Tomato 30 Carrot 20 Onion 15 Wednesday

Thursday As ice melts into liquid water, its temperature Increases Decreases Stays the same Varies with the environment Thursday

Friday Which of these is a chemical change? A sweater is knitted from cotton yarn Scissors cut cotton Ketchup stains cotton Acid eats a hole through cotton Friday