Mass Conservation
The mass of a grape drink mixture is 150 grams. Kathy boils the mixture and notices that 50 grams of water has evaporated. Which will most likely be the result?
A. The mass of the grape juice mixture will be 50 grams.
B. The mass of the grape juice mixture will be 100 grams.
C. The mass of the grape juice mixture will be 200 grams.
D. The mass of the grape juice mixture will remain 150 grams.
What is B? The mass of the grape juice mixture will be 100 grams.
A teacher places a penny into an amount of acid in a closed container to demonstrate a chemical change. The penny weighs 3 grams and the acid 230 grams. After the chemical reaction takes place, what will be the mass of the penny and acid?
What is 233 grams?
Jerry had a 142-gram candy bar. He broke the candy bar into 5 pieces. Which was the mass of the candy bar after it was broken?
What is 142 grams?
Susan is completing an experiment in science. She mixes 1 cup of hot water with 2 cups of salt. What will most likely happen to the substances?
A. The substances will blend and their properties will be changed.
B. The substances will not blend and their properties will be changed.
C. The substances will blend and form another liquid that appears as a solid.
D. The substances will not blend and their properties will be the same as the individual substances.
What is A. The substances will blend and their properties will be changed?
When baking soda is added to vinegar, bubbles form. Which is true about the bubbles?
A. The bubbles are the vinegar.
B. The bubbles are the baking soda.
C. The bubbles are both the baking soda and vinegar.
D. The bubbles are different from the baking soda and the vinegar.
What is D. The bubbles are different from the baking soda and the vinegar?
Sue is making pudding for her family. She mixes 490 g of cold milk with 90 g of pudding mix and then puts it in the refrigerator to solidify.
About how many grams of pudding was made?
What is 580g of pudding?
Jamie weighs a glass of water and observes its weight to be 12 ounces. Jamie then adds 6 ice cubes to the glass of water. Each ice cube weighs one ounce. After all of the ice cubes have melted, what will be the approximate weight of the glass of water?
What is 18 ounces?
Which material will most likely melt the quickest when heated on a stove?
iron, wood, glass, or butter
What is butter?
Libby mixed one cup of water with one tablespoon of salt. Why did the salt seem to disappear?
A. The salt condensed.
B. The salt evaporated.
C. The salt changed into water.
D. The salt dissolved in the water.
What is D. The salt dissolved in the water.?
Water evaporated out of a rusty bucket. Which answer choice below indicates the correct type of change and the evidence of that change for water evaporation. A. chemical change - new substance formed
B. physical change- new substance formed
C. chemical change - change in state of matter
D. physical change- change in state of matter
What is D. physical change- change in state of matter?
. The table below lists the amounts of the ingredients Stephanie used to make ice cream. Ingredients to Make Ice Cream Ingredient Mass sugar 30 g milk 250 g vanilla 10 g What will be the weight of the ice cream after being frozen?
What is 290 grams?
A teacher adds 2 g of chalk to 25 g of vinegar in a tightly sealed jar. The chalk and vinegar react, and gas bubbles form. What is the total mass of the jar’s contents after the reaction takes place?
What is 27 grams?
Which statement best describes how winter weather can damage roads?
A) Snow and ice can cause car accidents, which damage roads.
B) Rain, ice, and snow can cause the painted lines on roads to fade.
C) Cold temperatures can cause road materials to expand, creating potholes.
D)Water can get into cracks in roads, then freeze and expand, making the cracks worse.
What is D)Water can get into cracks in roads, then freeze and expand, making the cracks worse?
Which would most likely result in a new substance being produced?
A. tearing a newspaper
B. breaking a glass
C. baking a cake
D. cutting bread
What is baking a cake?
Raymond was cleaning out his kitchen cupboards. He put a cast iron pan outside with his trash. A week later, he saw the pan had rusted. Which best describes what happened to the pan?
A. Permanent change; the rust is new material that formed.
B. Temporary change; the rust is new material that formed.
C. Temporary change; the reaction was caused by a temperature change.
D. Permanent change; the reaction was caused by a temperature change.
What is A? A. Permanent change; the rust is new material that formed.
Sarah stirred 30 grams of drink mix into 200 grams of water and 70 grams of ice. If the ice melts, which is most likely the total mass of the mixture?
What is 300 grams?
Mrs. Champion’s class performed an experiment in which they combined 10 ounces of lemon juice with 15 ounces of vinegar to create a new cleaning solution. The experiment was conducted in a sealed spray bottle weighing 5 ounces. The students weighed the bottle with the solution immediately following the experiment. What did the students most likely discover about the weight of the solution and the bottle?
What is that it weighed 30 ounces total?
Why does liquid water become solid when placed in the freezer?
What is - it looses thermal energy?
Jenny poured the liquid in Beaker Y into the liquid in Beaker X. When she did, the liquid in Beaker X changed color. Which best explains this?
A. The properties of the liquid in Beaker X remained the same.
B. The properties of the liquid in Beaker Y remained the same.
C. The liquid in Beaker Y combined with the liquid in Beaker X producing a new substance with new properties.
D. The properties of the liquid in Beaker X remained the same while the properties of the liquid in Beaker Y changed.
What is C. The liquid in Beaker Y combined with the liquid in Beaker X producing a new substance with new properties?
Which is an example of a change that results in a new material?
A. melting wax
B. cutting paper
C. sawing wood
D. exploding fireworks
What is exploding fireworks?
Eric sells ice cream at his mom’s yard sale, but he notices that the ice cream melts too fast. Which is the best way to slow the melting?
What is place the ice cream in a cooler?
Mrs. Jones wants to prove to her students that when an object is burned, its total mass is the same before and after the reaction. What should Mrs. Jones do to make sure this is shown by the experiment?
A. burn the object in a closed container
B. burn the object outside on a nice day
C. add water to the object after it is burned
D. split the object into two equal pieces before burning
What is A? Burn the object in a closed container.
Sara wants to keep drinks cold during an afternoon sports game. Which container would most likely keep her drinks cold for several hours?
A) metal, because it will conduct heat
B) plastic, because it will conduct heat
C) metal, because it will insulate from heat
D) plastic, because it will insulate from heat
What is plastic because it will insulate from the heat?
A family living on the top floor of a tall building complains that their home gets too hot during the day. Which could they add to the roof to allow their home to stay cooler?
What is white rubber?
Why would aluminum foil be a good choice to wrap food that needs to be kept cool outside?
What is the shiny surface reflects the light and keeps the heat out?