Solids, liquids, gas Dissolving Mixtures And solutions Atoms Chemical Vs. physical $100 $500 $400 $300 $200

Topic 1 - $100 Each state of matter has certain physical properties. Which is a physical property of a gas? A. It has definite shape. B. It can be compressed. C. It has definite texture. D. Its particles vibrate in place.

Topic 1 - $100 B. It can be compressed.

Topic 1 - $ There are three main states of matter: liquid, solid, and gas. Which statement describes the shape of a solid? A. It has its own shape. B. It does not have shape. C. It takes the shape of its container. D. It changes shape with temperature.

Topic 1 - $200 A. It has its own shape.

Topic 1 - $ Each of the states of matter has specific characteristics. Which statement correctly describes one of these characteristics? A. Solids flow from one place to another. B. Gases can expand and be compressed. C. Liquids have definite volume and shape. D. The particles in solids have weak forces of attraction.

Topic 1 - $300 B. Gases can expand and be compressed.

Topic 1 - $ The window in Jordan‘s room has a wood border around the edge and a clear glass pane in the center. Jordan touches the wood and the glass to compare their textures. What would Jordan most likely observe? A. The timber and the glass are both rough. B. The timber and the glass are both smooth. C. The timber is rough, while the glass is smooth. D. The timber is smooth, while the glass is rough.

Topic 1 - $400 C. The timber is rough, while the glass is smooth.

Topic 1 - $ Lina needs to make a list of the physical properties of matter. Which of these should Lina include in her list? A. balance B. graduated cylinder C. temperature D. thermometer

Topic 1 - $500 C. temperature

Topic 2 - $ Mia made punch for a school picnic. She added sugar, strawberries, raspberries, and mint leaves to soda water. Which of these will dissolve in the soda? A mint leaves B raspberries C strawberries D sugar

Topic 2 - $100 D sugar

Topic 2 - $ The following table shows the amounts of four different solids that can dissolve in 1 L of water at the same temperature. Which solid is able to dissolve the BEST in water? A B C D SolidABCD Max. amount in grams that can dissolve in 1 L of water

Topic 2 - $200 C

Topic 2 - $ Bianca adds 3 tablespoons of cocoa mix to milk. It does not all dissolve. What could she do to the milk to get the cocoa to dissolve completely? A filter it B heat it C freeze it D evaporate it

Topic 2 - $300 B heat it

Topic 2 - $ Rebekkah has a glass of iced tea and a cup of hot tea. They each have the same amount of tea in them. She adds sugar to each until no more sugar will dissolve. What can you predict about the amount of sugar that will dissolve in the iced tea and the hot tea? A. The same amount of sugar will dissolve in both teas. B. More sugar will dissolve in the hot tea than in the iced tea. C. More sugar will dissolve in the iced tea than in the hot tea. D. Twice as much sugar will dissolve in the iced tea than in the hot tea.

Topic 2 - $400 B. More sugar will dissolve in the hot tea than in the iced tea.

Topic 2 - $ Luis’s class is studying how science and cooking are related. They learn that some substances will dissolve in water and others will not. Which of these will dissolve in water? A fat B oil C sugar D wax

Topic 2 - $500 C sugar

Topic 3 - $100 George's science teacher has a mixture of table salt and iron filings. Which of the following would be the best way to separate the salt and the iron filings? A. use a magnet to pull the iron filings from the salt B. add food coloring to the mixture to make the salt change color C. pour them into a beaker of water and see if the iron filings float D. heat up the mixture to see if the salt or the iron filings will burn away

Topic 3 - $100 A. use a magnet to pull the iron filings from the salt

Topic 3 - $200 Carrie has a container that contains thousands of mixed glass beads and iron beads of different shapes and sizes. Which of the following is the best way to separate them? A. The glass beads will float, so she could add water to the container and the glass will float to the top. B. The iron beads are magnetic, so she could separate the glass from the iron with a strong magnet. C. The iron beads might be heavier, so she could shake the container until the iron beads settle to the bottom. D. The iron beads are smaller, so she could pour the beads through a strainer and the glass beads will separate.

Topic 3 - $200 B. The iron beads are magnetic, so she could separate the glass from the iron with a strong magnet.

Topic 3 - $300 Imagine you have a bucket of saltwater. Which of the following would be the best way to remove the water so that you're left with only salt? A. Stir the saltwater for a long time. The salt will form a crystal. B. Leave the saltwater to sit for a long time. The salt will settle to the bottom. C. Boil the saltwater. The water will evaporate and only the salt will remain. D. Freeze the saltwater. The water will sink to the bottom and the salt will rise to the top.

Topic 3 - $300 C. Boil the saltwater. The water will evaporate and only the salt will remain.

Topic 3 - $400 Abdul uses sugar cubes to sweeten his tea. He wonders whether stirring his tea will make the sugar cube dissolve faster or slower. If Abdul stirs his tea, what effect does it have on the rate at which the sugar cube dissolves? A. The rate that the sugar cube dissolves will speed up. B. The rate that the sugar cube dissolves will slow down. C. The rate that the sugar cube dissolves will remain the same. D. The rate that the sugar cube dissolves will slow down and then stop.

Topic 3 - $400 A. The rate that the sugar cube dissolves will speed up.

Topic 3 - $500 5) Which of the following solids will dissolve in water? A. Iron fillings B. sand C. sugar D. paper

Topic 3 - $500 C. sugar

Topic 4 - $ Mr. Ling found the objects shown in the following illustration in his workshop. The can is made of aluminum. The wire is made of copper. How are these two objects different? A. They are made up of different elements. B. One is a metal, and the other is not a metal. C. They are made up of different states of matter. D. One is made up of atoms, and the other is made up of molecules.

Topic 4 - $100 A. They are made up of different elements.

Topic 4 - $ Zeke is comparing an atom to the blueberry muffin shown in the following photo. He says that the blueberries are like protons. Darla disagrees. She says that the blueberry muffin is not a good model of the atom. Which statement best supports Darla’s opinion? A. The blueberries in the muffin are all the same, but each proton in an atom is unique. B. The blueberries are spread throughout the muffin, but protons are found only in the atom’s nucleus. C. The blueberries in the muffin have a negative charge, but protons in an atom have a positive charge. D. The blueberries in the muffin have a positive charge, but protons in an atom have a negative charge.

Topic 4 - $200 B. The blueberries are spread throughout the muffin, but protons are found only in the atom’s nucleus.

Topic 4 - $ John Dalton was an English chemist who lived from 1766 to He came up with the modern atomic theory. What does the atomic theory state? A. All matter is made up of atoms. B. All atoms are made up of smaller particles. C. Atoms of different elements are exactly the same. D. Atoms of different kinds combine to form different elements.

Topic 4 - $300 A. All matter is made up of atoms.

Topic 4 - $ Different elements have different kinds of atoms. How can you tell an atom of one element from an atom of another? A. the number of electrons B. the number of neutrons C. the number of nuclei D. the number of protons

Topic 4 - $400 D. the number of protons

Topic 4 - $ Every atom has a center called the nucleus. The nucleus has a positive charge. It contains almost all of the atom’s mass, or weight. Which particles are found in the nucleus? A. neutrons only B. protons only C. electrons and protons D. neutrons and protons

Topic 4 - $500 D. neutrons and protons

Topic 5 - $100 1) On a sunny day, Emma is cutting branches from a tree in her yard. At midday, she takes a break, leaving a pile of branches and leaves on the ground. When she returns and gathers the branches, she notices the leaves are wilted and crisp. Which of the following correctly describes what happened to the leaves? A. The trees had not received water for a long time before being cut. B. The warm temperature caused moisture to evaporate from the leaves. C. The nutrients cannot reach the leaves if the tree's branches are not upright. D. The leaves had been covered in frost the week before, but had not wilted until now.

Topic 5 - $100 B. The warm temperature caused moisture to evaporate from the leaves.

Topic 5 - $200 2) Imagine that you fill a bucket to the top with water and then place the bucket outside in freezing weather. Which of the following describes what will happen when the water in the bucket freezes? A. The level of the water and the bucket itself will not be changed by becoming frozen. B. The level of the water will be lower once it is frozen and the molecules are more compact. C. The sides of the bucket will be pushed out and the level of the water will be above the rim of the bucket. D. The level of the water will be uneven once it is frozen because some of the water will remain as a liquid in the bucket.

Topic 5 - $200 C. The sides of the bucket will be pushed out and the level of the water will be above the rim of the bucket.

Topic 5 - $300 3) Which of the following describes an example of a material undergoing a chemical change to become another material with different characteristics? A. Iron turns to rust when it is exposed to oxygen. B. When water boils, it turns into vapor, which is a gas. C. Oxygen can become liquid at a very low temperature. D. Gold can be spread out very thin to cover a large area.

Topic 5 - $300 A. Iron turns to rust when it is exposed to oxygen.

Topic 5 - $400 4) Which answer describes a way that a liquid can be turned into a gas? A. Apply enough heat to cause evaporation. B. Apply freezing temperatures to cause condensation. C. Lower the temperature of the container to allow vaporization. D. Maintain a constant temperature over a long enough time to cause freezing.

Topic 5 - $400 A. Apply enough heat to cause evaporation.

Topic 5 - $500 5) Nathan is helping prepare a large meal for a family gathering. After cooking for several hours, he notices the windows inside the kitchen are covered in moisture. Which answer best explains how this happened? A. Evaporated moisture is condensing on the windows. B. Heating up the house will make moisture evaporate from the windows. C. It is raining outside and hot and dry inside, so water condenses inside the windows. D. Having many people in a house causes water to form condensation on the windows.

Topic 5 - $500 A. Evaporated moisture is condensing on the windows.