Chemistry

Chemistry, 20.07.2019 07:00, heynow111

How are bleach, hand soap, and lye alike? a) these substances have a nearly neutral ph. b) the substances are heterogeneous solutions. c) they have a high concentration of hydroxide ions. d) all the substances turn blue litmus paper red.

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Biology, 25.06.2019 05:00, juliajordan427

Mixtures involve two or more substances that are physically mixed or intermingled. however, these substances are not chemically bonded together. therefore, the substances can be present in any ratio. there are two types of mixtures: homogeneous and heterogeneous. a homogeneous mixture has a uniform composition whereas a heterogeneous mixture does not have a uniform composition. because of this, homogeneous mixtures look identical throughout the mixture to our eyes, as we cannot physically see the presence of more than one substance due to the uniformity. in terms of heterogeneous mixtures, we are able to see a physical boundary between different substances within the mixture, indicating the presence of more than one substance. which of the following is an example of a heterogeneous mixture?

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Chemistry, 28.06.2019 16:30, pineapplepizaaaaa

1. acids are substances that produce hydrogen ions (h+) when dissolved in water. lemon juice is an example of an acid. a.what does lemon juice taste like? b.what does it feel like if lemon juice gets in your eye? 2. bases are substances that produce hydroxide ions (oh-) when dissolved in water. hand soap is an example of a base. a.what does soap feel like? b.what does soap taste like? c.what does it feel like if soap gets in your eye?

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Pure substances and solutions are alike because they: are both homogeneous can both be homogeneous or heterogeneous are both heterogeneous are both types of mixtures

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Social Studies, 31.07.2019 16:00, miriamjb

Barbara completed an assignment for extra credit in science class. she used a ph meter to find the ph of different substances. after she finished measuring the phs, she created a diagram that showed the substances arranged in order from the most acidic to the most basic. if barbara added baking soda—ph 8.4—to her investigation, where should it appear in her diagram? a. between blood and soap b. between soap and bleach c. between milk and water d. between water and blood

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How are bleach, hand soap, and lye alike? a) these substances have a nearly neutral ph. b) the sub...

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