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Q 1/45
Score 0
Which of the following is a compound?
30
H
Na
HCl
Al
Q 2/45
Score 0
Karen wants to know the names of all of the elements. Where should Karen look to find this information?
30
library
lab safety manuel
textbook
periodic table
45 questions
Q.
Which of the following is a compound?
1
30 sec
Q.
Karen wants to know the names of all of the elements. Where should Karen look to find this information?
2
30 sec
Q.
Which of the following is a chemical change of iron?
3
30 sec
Q.
Which is the best description of a chemical change?
4
30 sec
Q.
Which of the following is an example of a chemical change?
5
30 sec
Q.
Students were investigating 2 clear solutions. Students added 2 mL of a clear solution to a beaker filled with a clear solution. A student observed that the temperature of the beaker increased. A red precipitate formed where the substance was poured into the beaker. Which observation provides the best evidence that a chemical change formed a new substance in the beaker?
6
30 sec
Q.
A new compound has just been developed, C17H2ON4NaO9P. How many different elements make up this compound?
7
30 sec
Q.
Which of the following would be found only in the Elements side of a Venn diagram? 1 - is a pure substance; 2 - made from more than one element; 3 - formed though a chemical reaction; 4 - found on a periodic table; 5 - essential for life; 6 - found on earth
8
30 sec
Q.
When metals, nonmetals, and metalloids are compared according to luster, which is the best description of the appearance of metalloids?
9
30 sec
Q.
A student performs an investigation on a 5 g sample of an element. They observed that the sample does not have luster, it is malleable, and does conduct electricity. Based on the physical properties, the student should classify this sample as a/an -
10
30 sec
Q.
Which of the following lists of properties best describes nonmetals?
11
30 sec
Q.
A student is testing a silver rock sample, the silver rock completes the circuit and lights the bulb. The student concludes the sample could be which of the following?
12
30 sec
Q.
A student is finding the density to identify the metal of her house key. She found the volume of the key to be 5 mL and the mass to be 39.5 g. What is the density of the key?
13
30 sec
Q.
A student drops a 10 g sample into a graduated cylinder with 30 mL of water. The water rises to 35 mL. What is the density of the sample?
14
30 sec
Q.
What is the density of an object that is 200 g and 40 mL?
15
30 sec
Q.
Which two physical properties of minerals can be observed by scratching the mineral against other substances?
16
30 sec
Q.
Which two physical properties of minerals can be observed without touching the minerals?
17
30 sec
Q.
A streak test used to identify minerals requires
18
30 sec
Q.
An oceanographer is studying the feeding patterns of sharks hunting fish in the Atlantic Ocean. The shark is traveling 5.5 m/s in a northeast direction for 30 seconds before turning and following the fish at 4 m/s in the southeast direction for 20 seconds.
19
30 sec
Q.
The graph shows the position of a moving object from 0 to 5 seconds. According to the above information and graph, which of the following statements is true for the moving object?
20
30 sec
Q.
A student who was training for a cross country race jogged for 2 hours and covered a distance of 14 kilometers. What was the average speed of the student?
21
30 sec
Q.
A group of students were investigating the speed of a wind-up toy. They performed 3 trials and recorded their data in a table. Refer to the table, what was the average speed of the wind-up toy during the 3 trials to the nearest hundredth of a cm/s?
22
30 sec
Q.
How would you best describe the motion of the graph?
23
30 sec
Q.
The graph shows the distance and time a cyclist traveled on a 4 hour ride. Which of the following statements is true based on the data graphed above?
24
30 sec
Q.
What type of ramp would require the most force to push a ball to the top?
25
30 sec
Q.
A ball is given a single push up an inclined plane as shown. Which of the following will NOT change as a result of the unbalanced force of gravity?
26
30 sec
Q.
According to the diagram, at what point would the roller coaster car have the greatest kinetic energy?
27
30 sec
Q.
According to the diagram, at what point would the roller coaster car have the greatest potential energy?
28
30 sec
Q.
The energy related to the motion of an object is called -
29
30 sec
Q.
A marble is given potential energy by being placed at Location W. When the marble is released, it rolls down the track. At which location does the marble have maximum kinetic energy?
30
30 sec
Q.
When a cow eats grass, it chews the grass and then swallows it. The food ends up in the stomach where it is further broken down and absorbed. The energy and matter from the grass is used by the cow's body to produce milk. What energy transformations occur in the cow during the entire process of using grass to produce milk?
31
30 sec
Q.
According to the diagram above, what energy transformation occurs when the hot plate is plugged into the outlet and the control knob is in the "on" postition>
32
30 sec
Q.
Which of the following energy transformations occur when the lamp is plugged into the outlet and the bulb is inserted into the lamp?
33
30 sec
Q.
Which of the following objects changes electrical energy into thermal energy when used?
34
30 sec
Q.
A student wanted to conduct a series of tests to identify different minerals. Which list below shows the tests that the student should conduct on each of the different minerals?
35
30 sec
Q.
A balance and a graduated cylinder are used to determine the density of a mineral sample. The sample has a mass of 14 g and a volume of 2 cm3. What is the density of the mineral sample?
36
30 sec
Q.
A student walks 12 km in 3 hr. What is the student's average speed in km/hr?
37
30 sec
Q.
The student designed an investigation to measure the amount of gas produced during the chemical reaction. The steps of the investigation are listed in the box, but are not in the correct order. What is the correct order of the lab procedure>
38
30 sec
Q.
Adrian makes a ramp out of some books and a plank of wood. He can change the height of the ramp by adding books under the plank. He rolls a toy car down each ramp. At the bottom of which ramp would the car be traveling the fastest?
39
30 sec
Q.
A student decided to find the density of her house key to try and identify the type of metal from which it is made. She found the volume of the key to be 5 mL and the mass to be 39.5 g. Using the chart, from which type of metal is the key made?
40
30 sec
Q.
Two students are pushing on opposite sides of a box with equal forces. Which statement best describes what will happen?
41
30 sec
Q.
Heat-resistant gloves are worn for protection when using a hot plate. Which of the following items would be used for protection when using glassware?
42
30 sec
Q.
Stephanie rode up to the local farmer's market with her grandmother. The graph illustrates their trip. Which line segment represents the time the car was parked at the farmer's market?
43
30 sec
Q.
Which safety equipment is most important for the student to use during an investigation involving a chemical reaction?
44
30 sec
Q.
Several students are conducting a laboratory investigation and they run out of a mystery element they are testing. The teacher is currently helping a different group. The student observe that the supply room door is open. How should the students resolve the situation?
