1. A pure substance containing only one kind of atom.
When a substance has more than one kind of atoms, it would be called a compound. A pure substance can be made out of an element or compound as long as there is only one kind of them, but this question seems to ask about elements.
2. An element is always uniform all the way through (homogeneous).
An element cannot be separated into simpler materials (except during nuclear reactions).
An element is the simplest form of material that can't be separated. The example would be oxygen(O2) or hydrogen(H2). An element doesn't mean it contains 1 atom because many of the stable structure made of 2 or more atoms. Normally, you cant separate O2 into two oxygen atoms.
<span>3. Over 100 existing elements are listed and classified on the periodic table.
The periodic table used to classify element and make it easier to understand. The classification based on the atomic number and the electron configuration of the elements.
The element in the same column could have similar traits so that they can be put into a group.</span>
While the normal gas flame can
only produce a “operating” to “light blue” type of flame, the Bunsen burner can
at least yield three types of flame. Consequently, the following: <span><span />
Operating flame
– which is yellow/orange in color, near 300° C. </span>
<span><span>·
</span>
Blue flame –
can be imperceptible under normal lighting conditions, near 500° C. The typically
used laboratory type of flame.</span>
<span><span>·
</span>Roaring-blue
flame – forms a triangular shaped in the center of the flame normally light
blue in color and interestingly, it’s a sound-producing flame. Heat is near to
700° C. </span>
Imagine with this three kinds
of flame produced and a Bunsen burner creates compared to a simple normal gas
flame. In sense, the roaring-blue flame proves evident as to why Bunsen burner
is hotter hence, the amount of heat it makes (700°C) it makes.
Answer:
Filtration
Explanation:
Filtration would be best because the sand particles would be trapped in the filter paper and the water would go through so the mixture would be separated
When you squeeze a balloon you re putting all of the air to the top or the bottom of the balloon so at some point it will overflow of so much air that it will pop. It is kind of like when we hold our breath for to long, instead of popping, we pass out. Because we need air and so does the balloon. If the balloon was meant to be squeezed, it would've been all mushy so you can squeeze it and it would be like goo. So if you don't wanna pop your balloon, then don't squeeze it.
Answer:
The ocean and atmosphere are connected. They work together to move heat and fresh water across the globe. Wind-driven and ocean-current circulations move warm water toward the poles and colder water toward the equator. The ocean can store much more heat than the land surfaces on the Earth. The majority of the thermal energy at the Earth’s surface is stored in the ocean. Thus, the absorption and movement of energy on the Earth is related to the ocean-atmosphere system. the answer is B.
