Answer:
Density
Amount of matter = mass
Amount of space it takes up = volume
Explanation:
A parking lot is going to be 40 m wide and 100 m long. Which dimensions
could be used for a scale model of the lot?
A. 10 cm x 25 cm
B. 100 cm x 300 m
O C. 75 in x 225 cm
D. 25 cm x 75 cm
What has to happen for these atoms/molecules to change from one state of matter to another? *view attachment*
Answer:Thermal energy is added or transferred
Explanation:
Which would increase the rate of dissolving salt into water? low temperature little to no agitation more surface area darker colors
Answer:
the answer is more surface area
Explanation:
i took the quiz and got it right
More surface area will help to increase the rate of dissolving salt in water.
What is dissolution?Dissolution is a process in which a substance is dissolved totally in a solvent or water. It is a process solute dissolve in solvent.
Therefore, More surface area will help to increase the rate of dissolving salt in water.
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What are fossil fuels composed of? 1.Carbon 2.Nitrogen 3.Oxygen
Answer:
fossil fuels are composed of Carbon.
Answer: Carbon
Explanation:
Our data for how much force is needed can be qualitative. This means we don’t have to know exact values for the force in Newtons. Let’s use a scale of 1-5 to rank how much force we apply each time.
6. How many different masses should we use?
How many trials should we do for each mass?
Answer:
For macroscopic objects, we use units such as grams and kilograms to state their masses, but. There will not be much error if you estimate the mass of an atom by simply. to what we did for our hypothetical example, but the percentages are different: Add two atomic masses of carbon and six atomic masses of hydrogen:
Explanation:
The forces exerted on an object are shown. A box has an arrow pointing right labeled F shown and an arrow pointing left labeled 8 N. If the object moves left, which statement is correct about force F?
Answer:
force F is weaker than force N
Answer:
its less then 8 N :)
What converts organic remains into fossil fuels? 1.chemical reaction 2water 3.heat and pressure
Answer:
Heat and pressure
Explanation:
In the periodic table, the most reactive metals are found a. in Group 1, the first column on the left. b. in Period 1, the first row across the top. c. in Groups 13 through 16 in the center. d. in Periods 6 and 7 at the bottom.
Answer:
Group 1
Explanation:
The alkali metals are the most reactive metals found on the periodic table
In a periodic table, the most reactive metals are found in Group 1, the first column on the left. (option a)
The most reactive metals are found in Group 1, which is the first column on the left side of the periodic table. Group 1 is also known as the alkali metals. These metals include elements like lithium (Li), sodium (Na), and potassium (K). Alkali metals are highly reactive because they have only one electron in their outermost energy level.
This means they are eager to lose that electron and achieve a stable electron configuration, which makes them more likely to engage in chemical reactions.
As we move down Group 1, the reactivity increases because the outermost electron is farther from the positively charged nucleus, making it easier to lose.
Hence the correct option is (a).
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What is the relationship between an experiment and a hypothesis?
A. An experiment should be designed so that the hypothesis is
proven to be true.
B. A well-designed experiment is one that can test a number of
different hypotheses.
O C. A useful hypothesis is one that can guide the design of an
experiment.
O D. A hypothesis is an educated guess as to the outcome of an
experiment.
A useful hypothesis is one that can guide the design of an experiment. The correct option is C.
What are an experiment and hypothesis?It is possible to create fresh hypotheses and experiments that more closely match the results of the initial studies' observations. A hypothesis is formulated to explain an observation, and an experiment is created to test it. The experiment's findings might or might not support the hypothesis.
Negative results do not necessarily imply that the hypothesis is invalid. It implies that there must be another connection between the variables. To accomplish this, a new theory and experiment must be created in order to better account for the observations.
Therefore, a useful hypothesis is one that can guide the design of an experiment. The correct option is C.
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The forced exerted on an object are shown. If the object moves right, which of the following is a possible value of F? Ignore my answer please help.
Answer:
5N
Explanation:
Because if it moves to the right, that means F is weak and 6N is STRONK