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Q 1/31
Score 0
Sunee mixes crushed ice into a glass of cold water. She puts the glass onto the kitchen counter. Then, she measures the temperature of the ice water.
What should she expect to happen to the temperature of the ice and water mixture?
30
It will keep decreasing until all of the liquid freezes.
It will keep increasing until all of the ice melts.
It will stay at 0 °C until all of the ice melts.
It will stay at 0 °C until all of the liquid freezes.
Q 2/31
Score 0
Some properties, such as mass, depend on how much matter is present. Other properties, such as malleability, remain the same no matter how much matter is present.
Which of these choices is a physical property of the element potassium that remains the same no matter how much matter is present?
30
Flammability
Volume
Melting point
Reactivity
31 questions
Q.
Sunee mixes crushed ice into a glass of cold water. She puts the glass onto the kitchen counter. Then, she measures the temperature of the ice water.
What should she expect to happen to the temperature of the ice and water mixture?
1
30 sec
Q.
Some properties, such as mass, depend on how much matter is present. Other properties, such as malleability, remain the same no matter how much matter is present.
Which of these choices is a physical property of the element potassium that remains the same no matter how much matter is present?
2
30 sec
Q.
Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr) are in the same column in the periodic table.
Why are these elements in the same column in the periodic table?
3
30 sec
Q.
Which of the following is NOT made up of atoms?
4
30 sec
Q.
What atoms combine to make up a molecule of water (H2O)?
5
30 sec
Q.
All of the following would be helpful in separating a mixture of sand and salt EXCEPT...
6
30 sec
Q.
Tyson draws a model to show how the particles in a liquid appear. Which model (or models) could be Tyson’s drawing of particles in a LIQUID?
7
30 sec
Q.
Raul and Bonnie are trying to classify several objects that they found during a field trip to the beach. They collected a sample of seawater, a piece of driftwood, and several smooth pebbles.
What property does the driftwood share with the pebbles that it does not share with the water?
8
30 sec
Q.
Carbon has an atomic number of 6. Which of the following does the atomic number 6 tell you about carbon?
9
30 sec
Q.
Marcus wants to use two objects to compare the sizes of a proton and an electron. If he uses a basketball for a proton, which object would best represent an electron?
10
30 sec
Q.
Jada and Brian are organizing the information they learned about solids, liquids, and gases. They made a Venn diagram. Now they need to fill it in.
What should Jada and Brian write where all of the states overlap at position 7?
11
30 sec
Q.
The chart below shows the atomic numbers and mass numbers for two elements. Element 2 has a greater atomic number and mass number than element 1.
How many more neutrons does element 2 have than element 1?
12
30 sec
Q.
In which state of matter are the particles able to move around one another?
13
30 sec
Q.
Atoms of different elements can join together in different arrangements to produce a variety of substances that are found on Earth. There are more than 100 known elements.
Which of the following best describes these elements?
14
30 sec
Q.
The periodic table has a lot of information in the form of letters and numbers. The information is organized into boxes, which are placed in rows and stacked in columns.
Which of the following does each box represent?
15
30 sec
Q.
Ted wants to know the average atomic mass of calcium. He knows that the letters Ca stand for calcium. He found the entry for calcium, Ca, in Period 4 of the periodic table. The diagram below shows this entry. Which of the following numbers should Ted identify as the average atomic mass of calcium, Ca?
16
30 sec
Q.
Any atom that has 13 protons is an aluminum atom.
Which statement best describes what would happen if a proton were added to an aluminum atom?
17
30 sec
Q.
A substance contains an arrangement of different types of atoms joined together by chemical bonds.
Which of the following classes of substances could this describe?
18
30 sec
Q.
Calcium is an element. What is the smallest particle of calcium that has the same chemical properties of calcium?
19
30 sec
Q.
A row of 100 million atoms of a single type would be only about 1 centimeter (cm) long. What occupies most of this space?
20
30 sec
Q.
Some compounds are classified as acids or bases. The pH scale shows how acidic or how basic (alkaline) these compounds are. The lower the pH, the more acidic a compound is. The higher the pH, the more basic )alkaline) it is. Sodium hydroxide, a compound commonly found in drain cleaners, has a pH of 13.
Which of these phrases describes sodium hydroxide?
21
30 sec
Q.
A magnet was placed near a pile that contained both iron and sulfur. The magnet was moved gradually closer to the pile. As it neared the pile, the magnet started attracting small pieces of iron from the pile.
Which of these statements best describes the contents of the pile?
22
30 sec
Q.
What do elements in the same group on the periodic table have in common?
23
30 sec
Q.
Two samples of water can have different densities. Which of these statements would best explain this fact?
24
30 sec
Q.
The four items shown below were served at a dinner at Kim's house. Each of the items is a mixture.
Which of the mixtures is a solution?
25
30 sec
Q.
The diagram below shows what happens during the formation of a compound. The diagram shows two substances joining together to form a third substance.
All these 3 substances have something in common: all of them are....
26
30 sec
Q.
The diagram below shows what happens during the formation of a compound. The diagram shows two substances joining together to form a third substance.
Which of these substances is a compound?
27
30 sec
Q.
Which of these substances is an example of a solution?
28
30 sec
Q.
What is true of all mixtures?
29
30 sec
Q.
Which of these substances is a compound? Pay attention to their chemical symbols or formulae, which are in parentheses)
30
30 sec
Q.
Tyson draws a model to show how the particles in a liquid appear. Which diagram shows the state of matter in which particles take on the shape, but not volume, of their container?
