Answer:
Example 1:
Independent variable = The brand of fertilizer
Dependent variable = The height of the chimney bellflower measured (in cm or m) using a ruler or metre stick or measuring tape etc
Control variable = The type of flower used i.e., chimney bellflower
Example 2:
Independent variable = The percentage/concentration of vinegar
Dependent variable = The (change in) mass of the limestone chips measured (in g or kg) using a scale
Control variable = The initial mass of the limestone chips
Example 3:
Independent variable = The temperature of the seawater
Dependent variable = The quantity of algae in a specific ocean site
Control variable = The ocean site and the starting amount of algae in it
Explanation:
The independent variable is the variable in an experiment that it changed e.g., in example 1 the test was about which brand of fertilizer would produce the tallest bellflowers. Therefore, to test this, you would have to experiment with different brands of fertilizers thus constantly changing it in the experiment.
The dependent variable is the variable in an experiment that is measured e.g., in experiment 2 the test was about if the mass of the limestone chips would change with different concentrations of vinegar. Therefore, to test this, you would have to measure if there was a change in the mass of the limestone chips thus making it the dependent variable
The control variable is the variable in an experiment that you keep the same e.g., in experiment 1, in order to test which brand of fertilizer produced the tallest bellflowers, you would have to keep the type of flower the same (i.e. chimney bellflowers) because that is the flower you are experimenting. It would not make sense to use a different flower since that could produce different, incorrect data
what are the words for each blank spot?
Answer:
1. Scientific Method, 2. Experiment, 3. Independent variable, 4. Controlled variable, 5. Dependent variable.
Explanation:
What is necessary for a metallic bond to form?
A) The atoms should be in close proximity.
B) The atoms should be far apart.
C) The electrons must be attracted to each other.
D) The nuclei must contain neutrons.
how does the design of an experiment relate to the method of difference?
Answer:
The design of experiments (DOE, DOX, or experimental design) is the design of any task that aims to describe and explain the variation of information under conditions that are hypothesized to reflect the variation. The term is generally associated with experiments in which the design introduces conditions that directly affect the variation, but may also refer to the design of quasi-experiments, in which natural conditions that influence the variation are selected for observation.
Explanation:
A chemical change occurs when two or more substances join to form new substances with new ______________ properties
Answer:
hope this helps!
Explanation:
In a chemical change, the atoms in the reactants rearrange themselves and bond together differently to form one or more new products with different characteristics than the reactants. When a new substance is formed, the change is called a chemical change
Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions.
Which statement is true about a base when it reacts with another substance?
A. It receives a hydrogen ion.
B. It receives a hydroxide ion.
C. It donates a hydrogen ion.
D. It donates a hydroxide ion.
Answer:
C
Explanation:
I think that:))
It is true that when base react with a substance, it receives hydrogen ion.
What is a base?A base is a substance that react with acids or acid substance to produce salt and water.
Base is slippery to touch , tastes bitter, changes the colour of indicators from blue lithmus paper to red. Base increase the number of hydroxide ions in a solution.
Therefore, is true that when base react with a substance, it receives hydrogen ion.
Learn more about base below.
https://brainly.com/question/22514615
Identify if you should use millimeters, centimeters, meters, or kilometers to measure each example.
Answer:
1. unless you live right around the block, distance from home to school should be in kilometers.
2. centimeters
3. millimeters
4. meters (the average is about 2 meters)
Answer this question and you’ll get 20 points Explain how energy is transfers using the major forms of energy in a circuit describe the energy source and form as energy is transformed throughout the circuit. Give at least 3 forms of energy. Including 2 transformations that occur. Make sure to provide the evidence that would indicate how we would know that the energy is complete within the circuit
Answer:
When the fuel is burnt, the hot gas rushes out of the rocket due to the great heat and pressure produced by the release of chemical energy in burning. Energy transfer is the movement of energy from one location to another. Energy transformation is when energy changes from one type to another.
Explanation:
Balance the given equation
2Cu + _____ = CuO + _____
Answer:
2Cu+2H20=2CuO+2H2
which is not an independent variable
Option B (Signal strength at the computer). This variable sounds like something that would be measured - and is affected by the independent variables, this variable is known as the dependent variable.
Timothy always liked playing catch with his dad. Whenever he had the chance to pick up a small object, he simultaneously threw a random object at his dad to catch him of guard. His objective was to have his dad drop the item. One day, Timothy threw two objects at is dad. One object was a tennis ball and the other was a golf ball. His dad ended up dropping both of the objects on the floor but was able to catch them after the drop because they both bounced back into his father’s hands. He wondered how this was possible???? This led to Timothy asking a science question that he would like to test by doing an experiment. What science question do you think Timothy asked to jumpstart an investigation?
THIS IS SCIENCE BTW BUT PLEASE HELP I WILL GIVE BRAINLIEST TO THE MOST ACCURATE AMSWER