True
Explanation:
The statement that patience, a popular card game in Mendeleev's time is also know as solitaire is very true. It was this card game that led to the discovery of the periodic table by Mendeleev in the 19th century.
Learn more:
periodic table brainly.com/question/8543126
periodic trends brainly.com/question/1971327
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Answer: false
Explanation:
I hit true on the quiz and it was wrong
Scientist use models to study atoms because you cannot either see or perceive directly what do atoms look like.
Models permit to explain in a simplified way how the atoms are constituted, and, so, figure out how they behave and how they are the bulding blocks of the matter (elements and compounds).
A model can be a drawing or structure with balls and sticks, which show in an idealized way what an atom is.
Since the scientists have discovered different facts about the atoms along the last 200 years the models of the atoms have also evolved.
The plum pudding model of the atom proposed by JJ Thompson was different of the nuclear model proposed by Rutherford, and Rutherford's was different from the planetary model proposed by Bohr, and this is different from the quantum model.
B. Even though for a majority of the race they accelerated at the same rate, Beverly won because her initial acceleration was greater than Carl’s.
C.Beverly accelerated at a greater rate for the entire race.
D. Carl accelerated at a greater rate for the entire race
The correct option is B.
Acceleration is defined as the rate of velocity of a body per unit time; that is, acceleration is given by the ratio of velocity and time. Looking at the graph given above, it can be seen that, the two runners started with different initial velocity; Beverly started with the initial velocity of 15 m/s while Carl started with the initial velocity of 10 m/s. For the rest of the race, the two runners maintains similar acceleration but Beverly won because her initial velocity was higher.
Usually a ball would roll toward the side that's lower, so if you had a ramp and put it on the side that was lower, then the ball would change direction and go the opposite direction
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Answer: cations
Explanation:
Metals are defined as the elements which loose electrons to attain stable electronic configuration. If an atom looses electrons, it leads to the formation of positive ions known as cations.
For Example: Sodium looses 1 electron to form ions.
Non-metals are defined as the elements which gain electrons to attain stable electronic configuration. If an atom gains electrons, it leads to the formation of negative ions known as anions.
For Example: Fluorine gains 1 electron to form ions.
Answer:
cations
Explanation:
metals are made of postively charged ions