Which of the following would be used to measure the amount of matter in an object?Weight

Density

Mass

Gravity

Answer: Option (C) is the correct answer.

Explanation:

Each element contains three sub-atomic particles which are protons, neutrons and electrons.

Inside the nucleus of an atom, there will be only protons and neutrons. Whereas electrons revolve around the nucleus of an atom.

Protons have a positive charge, neutrons have no charge and electrons have a negative charge.

Thus, we can conclude that electrons are the subatomic particles and each of them have a negative electrical charge.

Answer:

C. Infinitely Many Solutions

Explanation:

No solution case : This is the case when all given variables are not equal to any constant, for example: there is one row of zeros in matrix e.g 0=3. matrix B don't have any zero row. So, Not True.

One Solution case: This is the case when all variables are independent variables like if they are equal to some constant. e.g x=1,y=2,z=4 , Matrix B have more than one variable in first row due to which it made equation look like x+y=-5. so matrix B can't have only one solution. So, Not True.

Infinitely Many Solutions case: when there is one or more variables which is not equal to any constant and acting as linearly dependent variable, then that matrix have infinite solutions. Matrix B have that variable which is linearly dependent as show in the attachment solution. So, True.  

Answer:

Explanation:

a five step process that scientists use when they do their work.

1. ask a question

2. form a (testable) hypothesis or educated guess

3. conduct a controlled experiment (to test the hypothesis)

4. record & analyze results

5. develop a conclusion --> use the data from the experiment to see if it supports your hypothesis

Final answer:

Minerals can be described using 7 key characteristics: color, streak, luster, crystal form, hardness, cleavage, and density. These characteristics provide detailed information about a mineral's geological properties.

Explanation:

The characteristics used to describe minerals are generally located in the detail of their geological properties. These characteristics include:

1. Color: The appearance of the mineral in natural light.
2. Streak: The color of the mineral in powdered form.
3. Luster: The way a mineral reflects light, either metallic or non-metallic.
4. Crystal Form: The external shape of the mineral crystal.
5. Hardness: A measure of the mineral's resistance to being scratched.
6. Cleavage: The manner in which the mineral breaks along regular planes.
7. Density: The mass per unit volume of the mineral, measured by specific gravity.

Learn more about Mineral Characteristics:

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