Flashback
When the sun warms water, which resulting process occurs?
A precipitation
B runoff
C evaporation
D condensation
C - Evaporation
Two liquids are poured together, and a solid substance forms with no liquid remaining. Liquid 1 has a mass of 200 grams, and liquid 2 has a mass of 100 grams. What would be the total mass of the solid substance formed?
A 100 grams
B 150 grams
C 250 grams
D 300 grams
D 300 grams
Which best explains what happens to the inside of an egg when it is boiled?
A. The liquid becomes solid.
B. The solid becomes a liquid.
C. The solid becomes a gas.
D. The liquid becomes a gas.
A. The liquid becomes a solid
Students observed a piece of iron change from shiny to rusty. What caused this change?
A a chemical reaction
B a heat reaction
C a cold reaction
D a physical reaction
A - Chemical Reaction
What happens to colored sugar when it is added to water?
A. The sugar reacts and colors the water.
B. The sugar becomes white and the water changes color.
C. The sugar evaporates and the water changes color.
D. The sugar dissolves and colors the water.
D. The sugar dissolves and colors the water.
One morning, a student notices that the grass in the area is wet, although it had not rained during the night. What could have caused the grass to be wet?
A During the night, water had evaporated from the trees in the area.
B The air above the ground became warmer during the night and caused precipitation.
C When the air cooled above ground during the night, water vapor condensed on the grass.
D The grass soaked up water from the ground during the night
C When the air cooled above ground during the night, water vapor condensed on the grass.
Which property of sugar remains after sugar is dissolved in water?
A. color B. taste C. shape D. texture
B. taste
If 10 grams of water are added to 5 grams of salt, how much salt water will be made?
A 2 grams B 5 grams C 10 grams D 15 grams
D 15 grams
Which is the best example of a new substance forming?
A lighting a match
B cutting a piece of paper
C popping a balloon
D hitting a nail with a hammer
A - lighting a match
Campers burned logs in a campfire.How would the campers know that a chemical change has taken place?
A. The logs changed shape.
B. The rocks glowed when heated.
C. The wood became a different substance.
D. The ground absorbed heat from the coals.
C. The wood became a different substance.
How do plants return water back into the environment? A by evaporation
B by condensation
C by runoff
D by transpiration
D by transpiration
Anna is doing a science experiment. She mixes 1 cup of hot water with 2 cups of salt. What will most likely happen to the substances?
A. The water and salt will blend, and their properties will be changed.
B. The water and salt will blend, but their properties will be unchanged.
C. The water and salt will not blend, but their properties will be changed.
A. The water and salt will blend, and their properties will be changed.
data or information that is measured/counted and written down with numbers
A. Quantitative
B. Qualitative
C. Exclusive
D. Numeric
A. Quantitative
When coffee is poured into a cup of ice, the ice begins to melt and mix with the coffee. Which statement best describes this change?
A. The ice melting is a chemical change because the water changes form.
B. The ice melting is a physical change because the water may be frozen again.
C. The water and coffee mixing is a chemical change because the liquids change color.
D. The water and coffee mixing is a physical change because the mixture forms bubbles.
B. The ice melting is a physical change because the water may be frozen again.
Which is a physical change involving an egg?
A. frying an egg
B. boiling an egg
C. breaking an egg
C. breaking an egg
Water droplets forming on the outside of a cold glass of water on a hot, summer day is an example of which part of the water cycle?
A condensation
B evaporation
C precipitation
D transpiration
A condensation
A student notices that an inflated balloon gets larger when it is warmed by a lamp. Which best describes the mass of the balloon as a result of this change?
A The mass of the balloon increases because the size of the balloon has increased.
B The mass of the balloon increases because the temperature of the balloon has increased.
C The mass of the balloon stays the same because the gas inside the balloon still has the same mass after it warms up.
D The mass of the balloon stays the same because warming decreases the mass enough to cancel out the effect of increasing the size.
C The mass of the balloon stays the same because the gas inside the balloon still has the same mass after it warms up.
data or information in the form of words & descriptions
A. Quantitative
B. Qualitative
C. Exclusive
D. Numeric
B. Qualitative
Over time, iron becomes rust when it combines with water and oxygen. Which type of change must occur for rust to form?
A. Chemical B. mechanical C. Nuclear D. physical
A. Chemical
Which is an example of a chemical change?
A. melting ice to make water
B. baking cake batter to make a cake
C. putting cheese on bread to make a cheese sandwich
B. baking cake batter to make a cake
After lake water flows through a dam, which processes are most responsible for helping replace the water in the lake?
A precipitation and runoff
B transpiration and condensation
C condensation and runoff
D transpiration and precipitation
A precipitation and runoff
A rock weighing 60 g is broken into 2 pieces. What are possible weights for the two pieces of rock?
A. 20 g and 20 g
B. 30 g and 20 g
C. 30 g and 30 g
D. 45 g and 10 g
C. 30 g and 30 g
Jackie creates a piece of artwork by melting crayons and mixing the colors together. She uses 10 crayons that weighed 5 grams each. What is most likely the weight of her artwork?
A. 4 grams
B. 20 grams
C. 60 grams
D. 200 grams
C. 60 grams
Jennifer left her bike outside, buried in snow. In the spring, when the snow melted, she found her bike covered in rust. Which best describes the change to the bike?
A. It was a chemical change, because the bike was a different color.
B. It was a chemical change, because the rubber tires were deflated.
C. It was a chemical change, because rust can be removed from the metal.
D. It was a chemical change, because rust is a new substance on the metal.
D. It was a chemical change, because rust is a new substance on the metal.
Which type of change occurs when the size, shape, appearance, or volume of a substance is changed without changing its composition?
A. Physical B. Chemical C. Radiation D. nuclear
A. Physical